Graceful error handling 2

Let's improve previous example a little bit by returning a custom error type instead of a plain string. This will allow us to define specific error types and provide more structured error handling.

Your Task

The logic of the function remains the same as the previous challenge, but the returned error type is what you need to change.

Define an enum ParsePercentageError with the following variants:
- InvalidInput: for inputs that cannot be parsed as numbers.
- OutOfRange: for numbers that are not in the range 0-100.
Implement the Error trait for ParsePercentageError. Use the std::error::Error trait and provide human-readable descriptions for each error.
Update the parse_percentage function to:
- Return Ok(u8) if the input is a valid percentage (between 0 and 100).
- Return Err(ParsePercentageError::OutOfRange) if the number is out of range.
- Return Err(ParsePercentageError::InvalidInput) if the input is not a valid number.

Hints

Click here to reveal hints

The std::error::Error trait requires implementing the Display and Debug traits. You can derive Debug by #[derive(Debug)] and implement Display manually.
Use the std::fmt module to implement Display for the error enum, which is required for the Error trait.

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Solutions

Juan Mejia

juan-mejia

18 hours ago

3.56ms

87.95kb

use std::fmt;
use std::error::Error;
// 1. Finish the definition
#[derive(Debug, PartialEq)]
pub enum ParsePercentageError {
    InvalidInput,
    OutOfRange,
}
// 2. Implement the `Error` trait
impl fmt::Display for ParsePercentageError {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        match self {
            ParsePercentageError::InvalidInput => write!(f, "Percentage out of range"),
            ParsePercentageError::OutOfRange => write!(f, "Invalid input"),
        }
    }
}
impl Error for ParsePercentageError {}
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
    // 3. Implement this function
    match input.parse::<u8>() {
        Ok(n) if n < 101 => Ok(n),
        Ok (_) => Err(ParsePercentageError::OutOfRange),
        Err(_) => Err(ParsePercentageError::InvalidInput),
    }
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}

Heorhii

Kagev

2 days ago

4.88ms

87.95kb

use std::error::Error;
use std::fmt::{self, Display};
// 1. Finish the definition
#[derive(Debug,PartialEq)]
pub enum ParsePercentageError {
    OutOfRange,
    InvalidInput,
}
// 2. Implement the `Error` trait
impl Display for ParsePercentageError {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        match self {
            ParsePercentageError::OutOfRange => write!(f, "Percentage out of range"),
            ParsePercentageError::InvalidInput => write!(f, "Invalid input"),
        }
    }
}
impl Error for ParsePercentageError {}
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
    // 3. Implement this function
        match input.parse::<i32>() {
        Ok(number) => {
            if number >= 0 && number <= 100 {
                Ok(number as u8)
            } else {
                Err(ParsePercentageError::OutOfRange)
            }
        },
        Err(_) => Err(ParsePercentageError::InvalidInput),
    }
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}

Christophe Mohimont

mohic

2 days ago

4.75ms

87.95kb

use std::error::Error;
use std::fmt::{Display, Formatter};
#[derive(Debug, PartialEq)]
pub enum ParsePercentageError {
    InvalidInput,
    OutOfRange,
}
impl Display for ParsePercentageError {
    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
        match self {
            ParsePercentageError::InvalidInput => write!(f, "Invalid input"),
            ParsePercentageError::OutOfRange => write!(f, "Out of range"),
        }
    }
}
impl Error for ParsePercentageError {}
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
    let value = input
        .parse()
        .map_err(|_| ParsePercentageError::InvalidInput)?;
    if value > 100 {
        return Err(ParsePercentageError::OutOfRange);
    }
    Ok(value)
}

P S

psvr

3 days ago

3.58ms

87.95kb

use std::fmt;
// 1. Finish the definition
#[derive(Debug, PartialEq)]
pub enum ParsePercentageError {
    InvalidInput,
    OutOfRange,
}
// 2. Implement the `Error` trait
impl fmt::Display for ParsePercentageError {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        match self {
            ParsePercentageError::InvalidInput => write!(f, "Invalid input"),
            ParsePercentageError::OutOfRange => write!(f, "Percentage out of range"),
        }
    }
}
impl std::error::Error for ParsePercentageError {}
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
    // 3. Implement this function
    match input.parse::<u8>() {
        Ok(n) if n <= 100 => Ok(n),
        Ok(_) => Err(ParsePercentageError::OutOfRange),
        Err(_) => Err(ParsePercentageError::InvalidInput),
    }
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}

firefly

KamisAyaka

5 days ago

3.67ms

87.95kb

use std::fmt;
// Derive PartialEq for enum comparison
#[derive(Debug, PartialEq)]
pub enum ParsePercentageError {
    InvalidInput,
    OutOfRange,
}
impl fmt::Display for ParsePercentageError {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        match self {
            ParsePercentageError::InvalidInput => write!(f, "Input is not a valid number"),
            ParsePercentageError::OutOfRange => write!(f, "Percentage out of range"),
        }
    }
}
impl std::error::Error for ParsePercentageError {}
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
    match input.parse::<u8>() {
        Ok(num) => {
            if num <= 100 {
                Ok(num)
            } else {
                Err(ParsePercentageError::OutOfRange)
            }
        }
        Err(_) => Err(ParsePercentageError::InvalidInput),
    }
}
// Example usage remains the same
pub fn main() {
    let result = parse_percentage("50");
    println!("{:?}", result);
    let result = parse_percentage("101");
    println!("{:?}", result);
    let result = parse_percentage("abc");
    println!("{:?}", result);
}

amdfxlucas

6 days ago

3.26ms

87.95kb

use std::fmt;
use std::error::Error;
#[derive(Debug, PartialEq)]
pub enum ParsePercentageError
{
    InvalidInput,
    OutOfRange
}
impl fmt::Display for ParsePercentageError
{
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result // Result<(), Error>
    {
        match self
        {
            ParsePercentageError::InvalidInput => { write!(f, "InvalidInput") },
            ParsePercentageError::OutOfRange => { write!(f, "OutOfRange") }
        }
    }
}
impl Error for ParsePercentageError {}
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
   let res = input.parse::<u8>();
   match res {
    Ok(v) => {
            match v 
            {
                0..=100 => {Ok(v)},
                _ => { Err(ParsePercentageError::OutOfRange) }
            }
    },
    _ => {Err(ParsePercentageError::InvalidInput)}
   }
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}

muemart

6 days ago

3.70ms

87.95kb

// 1. Finish the definition
#[derive(Debug, PartialEq)]
pub enum ParsePercentageError {
    InvalidInput,
    OutOfRange
}
impl std::fmt::Display for ParsePercentageError {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        match self  {
            ParsePercentageError::InvalidInput => write!(f, "Invalid input"),
            ParsePercentageError::OutOfRange => write!(f, "Out of range"),
        }
    }
}
impl std::error::Error for ParsePercentageError {
}
// 2. Implement the `Error` trait
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
    let parsed = match input.parse::<u8>() {
        Err(_) => return Err(ParsePercentageError::InvalidInput),
        Ok(r) => r
    };
    if parsed > 100 {
        return Err(ParsePercentageError::OutOfRange);
    }
    Ok(parsed)
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}

Paul-Lucas Mock

mockpa

6 days ago

3.89ms

87.95kb

// 1. Finish the definition
use std::fmt;
use std::fmt::{Display, Formatter};
#[derive(Debug, PartialEq)]
pub enum ParsePercentageError
{
    InvalidInput,
    OutOfRange
}
impl Display for ParsePercentageError {
    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
        match self  {
            ParsePercentageError::InvalidInput => write!(f, "Invalid input"),
            ParsePercentageError::OutOfRange => write!(f, "Out of range"),
        }
    }
}
impl std::error::Error for ParsePercentageError {}
// 2. Implement the `Error` trait
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
   let num:u8  = match input.parse() {
       Ok(num) => num,
       Err(_) => return Err(ParsePercentageError::InvalidInput)
   };
    if num<0 || num>100{
        return Err(ParsePercentageError::OutOfRange);
    }
    Ok(num)
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}

Paul-Lucas Mock

mockpa

6 days ago

4.17ms

87.95kb

// 1. Finish the definition
use std::fmt;
use std::fmt::{Display, Formatter};
#[derive(Debug, PartialEq)]
pub enum ParsePercentageError
{
    InvalidInput,
    OutOfRange
}
impl Display for ParsePercentageError {
    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
        match self  {
            ParsePercentageError::InvalidInput => write!(f, "Invalid input"),
            ParsePercentageError::OutOfRange => write!(f, "Out of range"),
        }
    }
}
impl std::error::Error for ParsePercentageError {}
// 2. Implement the `Error` trait
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
   let num:u8  = match input.parse() {
       Ok(num) => num,
       Err(_) => return Err(ParsePercentageError::InvalidInput)
   };
    if num<0 || num>100{
        return Err(ParsePercentageError::OutOfRange);
    }
    Ok(num)
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}

Bryan

yuyangchen23

8 days ago

3.58ms

87.95kb

// 1. Finish the definition
use std::fmt;
#[derive(Debug, PartialEq)]
pub enum ParsePercentageError {
    InvalidInput,
    OutOfRange,
}
impl fmt::Display for ParsePercentageError {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        match self {
            ParsePercentageError::OutOfRange => write!(f, "Out of range"),
            ParsePercentageError::InvalidInput => write!(f, "Invalid input"),
        }
    }
}
// 2. Implement the `Error` trait
impl std::error::Error for ParsePercentageError {}
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
    // 3. Implement this function
    match input.parse::<u8>() {
        Ok(value) if value <= 100 => Ok(value),
        Ok(_) => Err(ParsePercentageError::OutOfRange),
        Err(_) => Err(ParsePercentageError::InvalidInput),
    }
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}

ashishkr2912

8 days ago

5.16ms

87.95kb

use std::fmt;
// 1. Finish the definition
#[derive(Debug,PartialEq)]
pub enum ParsePercentageError {
    InvalidInput,
    OutOfRange,
}
impl std::fmt::Display for ParsePercentageError {
    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
        match self {
            ParsePercentageError::InvalidInput => write!(f, "InvalidInput"),
            ParsePercentageError::OutOfRange => write!(f, "OutOfRange"),
        }
    }
}
// 2. Implement the `Error` trait
impl std::error::Error for ParsePercentageError {}
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
    match input.parse::<u8>() {
        Ok(x) if x<=100 => Ok(x),
        Ok(_) => Err(ParsePercentageError::OutOfRange),
        Err(_) => Err(ParsePercentageError::InvalidInput),
    }
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:#?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:#?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:#?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}

achla95

10 days ago

3.86ms

87.95kb

use std::fmt;
// 1. Finish the definition
#[derive(Debug, PartialEq)]
pub enum ParsePercentageError {
    InvalidInput,
    OutOfRange
}
// 2. Implement the `Error` trait
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
    // 3. Implement this function
    match input.parse::<u8>() {
        Ok(num) if num <= 100 => Ok(num),
        Ok(_) => Err(ParsePercentageError::OutOfRange),
        Err(_) => Err(ParsePercentageError::InvalidInput)
    }
}
impl fmt::Display for ParsePercentageError {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        match self {
            ParsePercentageError::InvalidInput => write!(f, "Invalid input"),
            ParsePercentageError::OutOfRange => write!(f, "Percentage out of range"),
        }
    }
}
impl std::error::Error for ParsePercentageError {}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}

johnson

ssebide

12 days ago

3.49ms

87.95kb

use std::fmt;
// 1. Finish the definition
#[derive(Debug,PartialEq)]
pub enum ParsePercentageError {
    InvalidInput,
    OutOfRange,
}
impl std::fmt::Display for ParsePercentageError {
    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
        match self {
            ParsePercentageError::InvalidInput => write!(f, "InvalidInput"),
            ParsePercentageError::OutOfRange => write!(f, "OutOfRange"),
        }
    }
}
// 2. Implement the `Error` trait
impl std::error::Error for ParsePercentageError {}
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
    match input.parse::<u8>() {
        Ok(x) if x<=100 => Ok(x),
        Ok(_) => Err(ParsePercentageError::OutOfRange),
        Err(_) => Err(ParsePercentageError::InvalidInput),
    }
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:#?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:#?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:#?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}

undefeated_

boyboi86

12 days ago

3.39ms

87.95kb

use std::fmt;
// 1. Finish the definition
#[derive(Debug, PartialEq)]
pub enum ParsePercentageError {
    InvalidInput,
    OutOfRange
}
// 2. Implement the `Error` trait
impl std::error::Error for ParsePercentageError {
    fn description(&self) -> &str {
        match *self {
            ParsePercentageError::InvalidInput => "Err(ParsePercentageError::InvalidInput)",
            ParsePercentageError::OutOfRange => "Err(ParsePercentageError::OutOfRange)"
        }
    }
}
impl fmt::Display for ParsePercentageError {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        write!(f, "An errror occured")
    }
}
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
    if let Ok(n) = input.parse::<i32>() {
        if n > 100 || n < 0 {
            return Err(ParsePercentageError::OutOfRange);
        }
        return Ok(n as u8);
    }
    return Err(ParsePercentageError::InvalidInput);
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}

Thomas Michiels

mithom

12 days ago

3.99ms

87.95kb

// 1. Finish the definition
#[derive(Debug, PartialEq)]
pub enum ParsePercentageError {
    InvalidInput,
    OutOfRange
}
// 2. Implement the `Error` trait
impl std::error::Error for ParsePercentageError {}
impl std::fmt::Display for ParsePercentageError {
   fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        match self {
            ParsePercentageError::InvalidInput =>  return write!(f, "Err(ParsePercentageError::InvalidInput"),
            ParsePercentageError::OutOfRange =>  return write!(f, "Err(ParsePercentageError::OutOfRange")
        }
    }
}
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
    match input.parse::<u8>() {
        Ok(x) if x <= 100 => Ok(x),
        Ok(_) => Err(ParsePercentageError::OutOfRange),
        Err(_) => Err(ParsePercentageError::InvalidInput)
    }
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}

Thomas Michiels

mithom

12 days ago

4.65ms

87.95kb

// 1. Finish the definition
#[derive(Debug, PartialEq)]
pub enum ParsePercentageError {
    InvalidInput,
    OutOfRange
}
// 2. Implement the `Error` trait
impl std::error::Error for ParsePercentageError {}
impl std::fmt::Display for ParsePercentageError {
   fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        match self {
            ParsePercentageError::InvalidInput =>  return write!(f, "Err(ParsePercentageError::InvalidInput"),
            ParsePercentageError::OutOfRange =>  return write!(f, "Err(ParsePercentageError::OutOfRange")
        }
    }
}
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
    match input.parse::<u8>() {
        Ok(x) if x <= 100 => Ok(x),
        Ok(_) => Err(ParsePercentageError::OutOfRange),
        Err(_) => Err(ParsePercentageError::InvalidInput)
    }
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}

Fanzzzd

13 days ago

3.44ms

87.95kb

use core::fmt;
use std::error::Error;
// 1. Finish the definition
#[derive(Debug, PartialEq)]
pub enum ParsePercentageError {
    InvalidInput,
    OutOfRange,
}
// 2. Implement the `Error` trait
impl fmt::Display for ParsePercentageError {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> std::fmt::Result {
        match self {
            ParsePercentageError::InvalidInput => {
                write!(f, "Percemtage out of range")
            }
            ParsePercentageError::OutOfRange => {
                write!(f, "Invalid Input")
            }
        }
    }
}
impl Error for ParsePercentageError {}
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
    // 3. Implement this function
    match input.parse::<u8>() {
        Ok(value) if value <= 100 => Ok(value),
        Ok(_) => Err(ParsePercentageError::OutOfRange),
        _ => Err(ParsePercentageError::InvalidInput),
    }
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}

StevenCanDrink

14 days ago

4.00ms

87.95kb

use std::fmt;
// 1. Finish the definition
#[derive(Debug, PartialEq)]
pub enum ParsePercentageError {
    OutOfRange,
    InvalidInput,
}
// 2. Implement the `Error` trait
// 2. Implement the `Error` trait
impl std::error::Error for ParsePercentageError {}
impl fmt::Display for ParsePercentageError {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        match self {
            ParsePercentageError::OutOfRange => write!(f, "Percentage out of range"),
            ParsePercentageError::InvalidInput => write!(f, "Invalid input format"),
        }
    }
}
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
    // 3. Implement this function
    let number = input.parse::<u8>().map_err(|_| ParsePercentageError::InvalidInput)?;
    if number > 100 {
        return Err(ParsePercentageError::OutOfRange);
    }
    Ok(number)
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}

GunGraveCpp

15 days ago

4.29ms

87.95kb

use core::write;
use std::cmp::PartialEq;
use  std::fmt;
use std::error;
#[derive(Debug, PartialEq)]
pub enum ParsePercentageError{
    OutOfRange,
    InvalidInput
}
impl fmt::Display for ParsePercentageError {
   fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        match self {
            ParsePercentageError::InvalidInput =>  return write!(f, "Err(ParsePercentageError::InvalidInput"),
            ParsePercentageError::OutOfRange =>  return write!(f, "Err(ParsePercentageError::OutOfRange")
        }
    }
}
impl error::Error for ParsePercentageError {}
// 2. Implement the `Error` trait
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
    match input.parse() {
        Err(_e) => return Err(ParsePercentageError::InvalidInput),
        Ok(val) => match val {
            0..=100 => return Ok(val),
            _ => Err(ParsePercentageError::OutOfRange)
        }
    }
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}

David Rasch

dcrasch

15 days ago

3.89ms

87.95kb

use std::fmt;
// 1. Finish the definition
#[derive(Debug,PartialEq)]
pub enum ParsePercentageError {
    InvalidInput,
    OutOfRange,
}
impl std::fmt::Display for ParsePercentageError {
    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
        match self {
            ParsePercentageError::InvalidInput => write!(f, "InvalidInput"),
            ParsePercentageError::OutOfRange => write!(f, "OutOfRange"),
        }
    }
}
// 2. Implement the `Error` trait
impl std::error::Error for ParsePercentageError {}
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
    match input.parse::<u8>() {
        Ok(x) if x<=100 => Ok(x),
        Ok(_) => Err(ParsePercentageError::OutOfRange),
        Err(_) => Err(ParsePercentageError::InvalidInput),
    }
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:#?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:#?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:#?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}

Lvfalue

16 days ago

3.70ms

87.95kb

// 1. Finish the definition
#[derive(Debug, PartialEq)]
pub enum ParsePercentageError {
    InvalidInput,
    OutOfRange
}
impl std::fmt::Display for ParsePercentageError {
    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
        match self {
            ParsePercentageError::InvalidInput => write!(f, "InvalidInput"),
            ParsePercentageError::OutOfRange => write!(f, "OutOfRange"),
        }
    }
}
// 2. Implement the `Error` trait
impl std::error::Error for ParsePercentageError {
}
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
    // 3. Implement this function
    let number = input.trim().parse::<u8>().map_err(|_| ParsePercentageError::InvalidInput)?;
    if number > 100 {
        return Err(ParsePercentageError::OutOfRange);
    }
    Ok(number)
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}

Artem Nistuley

artemnistuley

18 days ago

4.01ms

87.95kb

use std::fmt;
use std::error::Error;
// 1. Finish the definition
#[derive(Debug, PartialEq)]
pub enum ParsePercentageError {
    InvalidInput,
    OutOfRange,
}
impl fmt::Display for ParsePercentageError {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        match *self {
            ParsePercentageError::InvalidInput => write!(f, "Invalid input"),
            ParsePercentageError::OutOfRange => write!(f, "Out of range"),
        }
    }
}
// 2. Implement the `Error` trait
impl Error for ParsePercentageError {}
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
    // 3. Implement this function
    let value = input.parse::<u8>();
    match value {
        Err(_) => Err(ParsePercentageError::InvalidInput),
        Ok(101..) => Err(ParsePercentageError::OutOfRange),
        Ok(val) => Ok(val),
    }
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}

Jean-baptiste JOFFRE

Indy79

19 days ago

3.40ms

87.95kb

use std::fmt::{Display, Formatter, Pointer};
// 1. Finish the definition
#[derive(Debug, PartialEq)]
pub enum ParsePercentageError {
    OutOfRange,
    InvalidInput,
}
impl Display for ParsePercentageError {
    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
        match *self {
            ParsePercentageError::InvalidInput => write!(f, "InvalidInput"),
            ParsePercentageError::OutOfRange => write!(f, "OutOfRange"),
        }
    }
}
// 2. Implement the `Error` trait
impl std::error::Error for ParsePercentageError {}
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
    match input.parse() {
        Ok(percent) => {
            if percent > 100 {
                return Err(ParsePercentageError::OutOfRange)
            }
            Ok(percent)
        },
        Err(_) => Err(ParsePercentageError::InvalidInput)
    }
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}

YVV

yvv4git

20 days ago

9.31ms

87.95kb

use std::fmt;
use std::error::Error;
// 1. Finish the definition
#[derive(Debug, PartialEq)] // Added PartialEq here
pub enum ParsePercentageError {
    InvalidInput,
    OutOfRange,
}
// Implement the `Display` trait for ParsePercentageError
impl fmt::Display for ParsePercentageError {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        match *self {
            ParsePercentageError::InvalidInput => write!(f, "Input is not a valid number."),
            ParsePercentageError::OutOfRange => write!(f, "Number is out of the valid percentage range (0-100)."),
        }
    }
}
// 2. Implement the `Error` trait
impl Error for ParsePercentageError {}
// 3. Implement this function
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
    match input.parse::<u8>() {
        Ok(num) if num <= 100 => Ok(num),
        Ok(_) => Err(ParsePercentageError::OutOfRange),
        Err(_) => Err(ParsePercentageError::InvalidInput),
    }
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}
// Tests (assuming this is the content of tests/tests.rs)
#[cfg(test)]
mod tests {
    use super::*;
    #[test]
    fn test_valid_percentage() {
        assert_eq!(parse_percentage("75"), Ok(75));
        assert_eq!(parse_percentage("0"), Ok(0));
        assert_eq!(parse_percentage("100"), Ok(100));
    }
    #[test]
    fn test_out_of_range() {
        assert_eq!(
            parse_percentage("150"),
            Err(ParsePercentageError::OutOfRange)
        );
    }
    #[test]
    fn test_invalid_input() {
        assert_eq!(
            parse_percentage("abc"),
            Err(ParsePercentageError::InvalidInput)
        );
    }
}

visanr

21 days ago

3.37ms

87.95kb

#[derive(Debug, PartialEq, Eq)]
pub enum ParsePercentageError {
    InvalidInput,
    OutOfRange
}
use std::fmt;
use std::error::Error;
impl fmt::Display for ParsePercentageError {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        match self {
            ParsePercentageError::InvalidInput => write!(f, "Err(ParsePercentageError::InvalidInput)"),
            ParsePercentageError::OutOfRange => write!(f, "Err(ParsePercentageError::OutOfRange)")
        }
    }
}
impl Error for ParsePercentageError {}
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
    let n = input
        .parse::<u8>()
        .map_err(|_0| ParsePercentageError::InvalidInput)?;
    
    if n <= 100 {
        Ok(n)
    } else {
        Err(ParsePercentageError::OutOfRange)
    }
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}

toto

21 days ago

3.61ms

87.95kb

use std::{error::Error, fmt::Display};
// 1. Finish the definition
#[derive(Debug, PartialEq)]
pub enum ParsePercentageError {
    InvalidInput,
    OutOfRange
}
// 2. Implement the `Error` trait
impl Error for ParsePercentageError {}
impl Display for ParsePercentageError {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        match self {
            ParsePercentageError::InvalidInput => write!(f, "Invalid input"),
            ParsePercentageError::OutOfRange => write!(f, "Percentage out of range")
        }
    }
}
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
    // 3. Implement this function
    match input.trim().parse::<u8>() {
        Ok(percentage) if percentage <= 100 => Ok(percentage),
        Ok(_) => Err(ParsePercentageError::OutOfRange),
        Err(_) => Err(ParsePercentageError::InvalidInput)
    }
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}

Lucas Watkins

lucas-watkins

22 days ago

3.52ms

87.95kb

use std::fmt;
// 1. Finish the definition
#[derive(Debug, PartialEq)]
pub enum ParsePercentageError {
    InvalidInput,
    OutOfRange
}
// 2. Implement the `Error` trait
impl std::error::Error for ParsePercentageError {
    fn description(&self) -> &str {
        match *self {
            ParsePercentageError::InvalidInput => "Err(ParsePercentageError::InvalidInput)",
            ParsePercentageError::OutOfRange => "Err(ParsePercentageError::OutOfRange)"
        }
    }
}
impl fmt::Display for ParsePercentageError {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        write!(f, "An errror occured")
    }
}
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
    if let Ok(n) = input.parse::<i32>() {
        if n > 100 || n < 0 {
            return Err(ParsePercentageError::OutOfRange);
        }
        return Ok(n as u8);
    }
    return Err(ParsePercentageError::InvalidInput);
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}

Luka Bračun

lbracun

23 days ago

3.36ms

87.95kb

use std::{error::Error, fmt::{Display, Formatter}};
#[derive(Debug,PartialEq)]
pub enum ParsePercentageError {
  InvalidInput, OutOfRange
}
impl Error for ParsePercentageError {}
impl Display for ParsePercentageError {
    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
        match self {
            ParsePercentageError::OutOfRange => {
                write!(f, "The value is out of range")
            }
            ParsePercentageError::InvalidInput => {
                write!(f, "The input is invalid")
            }
        }
    }
}
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
    match input.parse::<u8>() {
        Ok(value) => {
          if value > 100 {
            Err(ParsePercentageError::OutOfRange)
          } else {
            Ok(value)
          }
        },
        _ => Err(ParsePercentageError::InvalidInput)
    }
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}

bzdula

23 days ago

3.22ms

87.95kb

use std::{error::Error, fmt::Display};
#[derive(Debug, PartialEq)]
pub enum ParsePercentageError {
    InvalidInput,
    OutOfRange,
}
impl Display for ParsePercentageError {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        write!(f, "{:?}", &self)
    }
}
impl Error for ParsePercentageError {}
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
    match input.parse::<u8>() {
        Ok(val) if val > 100 => Err(ParsePercentageError::OutOfRange),
        Ok(val) => Ok(val),
        Err(_) => Err(ParsePercentageError::InvalidInput),
    }
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}

Ranjith Thangavel

RanjithECE24

24 days ago

6.61ms

87.95kb

use std::fmt;
// 1. Finish the definition
#[derive(Debug, PartialEq, Eq)]
pub enum ParsePercentageError {
    OutOfRange,
    InvalidInput,
}
// 2. Implement the `Error` trait
impl fmt::Display for ParsePercentageError {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        match self {
            ParsePercentageError::OutOfRange => write!(f, "Err(ParsePercentageError::OutOfRange)"),
            ParsePercentageError::InvalidInput => write!(f, "Err(ParsePercentageError::InvalidInput)"),
        }
    }
}
impl std::error::Error for ParsePercentageError {}
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
    // 3. Implement this function
    match input.parse() {
        Ok(value) => {
            if value <= 100 {
                Ok(value)
            } else {
                Err(ParsePercentageError::OutOfRange)
            }
        },
        Err(_) => {
            Err(ParsePercentageError::InvalidInput)
        }
    }
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}

Dimas Avrian Fachriza.

FForFachriza

25 days ago

4.12ms

87.95kb

use std::error::Error;
use std::fmt::{Display, Formatter};
// 1. Finish the definition
#[derive(Debug, PartialEq)]
pub enum ParsePercentageError {
    InvalidInput,
    OutOfRange
}
// 2. Implement the `Error` trait
impl Display for ParsePercentageError {
    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
        match self {
            ParsePercentageError::InvalidInput => {
             write!(f, "Percentage out of range")
             }
            ParsePercentageError::OutOfRange => {
             write!(f, "Invalid Input")
             }
        }
    }
}
impl Error for ParsePercentageError {}
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
    let num_input = input.parse::<u8>();
    match num_input {
        Ok(num) => {
            if num > 100 {
                Err(ParsePercentageError::OutOfRange)
            } else {
                Ok(num)
            }
        }
        Err(_) => {
            Err(ParsePercentageError::InvalidInput)
        },
    }
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}

Christopher Deutsch

chrisdeutsch

a month ago

5.12ms

87.95kb

use std::error::Error;
use std::fmt;
use std::fmt::Display;
// 1. Finish the definition
#[derive(Debug, PartialEq)]
pub enum ParsePercentageError {
    InvalidInput,
    OutOfRange,
}
// 2. Implement the `Error` trait
impl Display for ParsePercentageError {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        match self {
            ParsePercentageError::InvalidInput => write!(f, "Invalid input"),
            ParsePercentageError::OutOfRange => write!(f, "Input out of range"),
        }
    }
}
impl Error for ParsePercentageError {}
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
    match input.parse::<u8>() {
        Ok(value) if value <= 100 => Ok(value),
        Ok(_) => Err(ParsePercentageError::OutOfRange),
        Err(_) => Err(ParsePercentageError::InvalidInput),
    }
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}

Wouter

WouterMartens

a month ago

3.38ms

87.95kb

use std::fmt;
#[derive(Debug, PartialEq)]
pub enum ParsePercentageError {
    InvalidInput,
    OutOfRange,
}
impl fmt::Display for ParsePercentageError {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        match self {
            ParsePercentageError::InvalidInput => write!(f, "Input is not a valid number"),
            ParsePercentageError::OutOfRange => write!(f, "Value is out of range (0-100)"),
        }
    }
}
impl std::error::Error for ParsePercentageError {}
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
    match input.parse::<u8>() {
        Ok(value) if value <= 100 => Ok(value),
        Ok(_) => Err(ParsePercentageError::OutOfRange),
        Err(_) => Err(ParsePercentageError::InvalidInput),
    }
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}

shahab-tplus

a month ago

4.40ms

87.95kb

use std::fmt;
use std::error::Error;
// 1. Finish the definition
#[derive(Debug, PartialEq)]
pub enum ParsePercentageError {
    InvalidInput,
    OutOfRange
}
// 2. Implement the `Error` trait
impl fmt::Display for ParsePercentageError {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        write!(f, "{:?}", self)
    }
}
impl Error for ParsePercentageError {
}
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
    // 3. Implement this function
    match input.parse::<i32>() {
        Ok(n) if n >=0 && n <= 100 => Ok(n as u8),
        Ok(_) => Err(ParsePercentageError::OutOfRange),
        Err(_) => Err(ParsePercentageError::InvalidInput)
    }
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}

whhc

a month ago

3.38ms

87.95kb

use std::{error::Error, fmt::Display};
#[derive(Debug, PartialEq, Eq)]
pub enum ParsePercentageError {
    InvalidInput,
    OutOfRange,
}
impl Display for ParsePercentageError {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        write!(f, "{:?}", self)
    }
}
impl Error for ParsePercentageError {}
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
    match input.parse::<u8>() {
        Ok(n) => {
            if n <= 100 {
                Ok(n)
            } else {
                Err(ParsePercentageError::OutOfRange)
            }
        }
        Err(_) => Err(ParsePercentageError::InvalidInput),
    }
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}

Tommy

verse215

a month ago

4.63ms

87.95kb

// 1. Finish the definition
#[derive(Debug, PartialEq)]
pub enum ParsePercentageError {
    InvalidInput,
    OutOfRange,
}
impl std::fmt::Display for ParsePercentageError {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> Result<(), std::fmt::Error> {
        match self {
            ParsePercentageError::InvalidInput => write!(f,"Err(ParsePercentageError::InvalidInput)"),
            ParsePercentageError::OutOfRange => write!(f,"Err(ParsePercentageError::OutOfRange)")
        }
    }
}
// 2. Implement the `Error` trait
impl std::error::Error for ParsePercentageError {
    fn description(&self) -> &str {
        match self {
            ParsePercentageError::InvalidInput => "Invalid Input",
            ParsePercentageError::OutOfRange => "Input Out of Range",
        }
    }
}
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
    // 3. Implement this function
    match input.parse::<u8>() {
        Err(_) => {
            return Err(ParsePercentageError::InvalidInput);
        },
        Ok(v) => {
            if v > 100 {
                return Err(ParsePercentageError::OutOfRange);
            }
        }
    }
    Ok(input.parse().unwrap())
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}

yba01

a month ago

4.86ms

87.95kb

use std::error::Error;
use std::fmt;
// 1. Finish the definition
#[derive(Debug, PartialEq)]
pub enum ParsePercentageError{
    InvalidInput,
    OutOfRange,
}
impl fmt::Display for ParsePercentageError {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> fmt::Result {
        match self {
            ParsePercentageError::InvalidInput => write!(f, "The input isn't numeric"),
            ParsePercentageError::OutOfRange => write!(f, "The input is greater than 100"),
        }
    }
}
// 2. Implement the `Error` trait
impl Error for ParsePercentageError{}
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
    // 3. Implement this function
   let res = input.parse::<u8>();
    match res {
        Ok(value) if value <= 100 =>  Ok(value),
        Ok(_) => Err(ParsePercentageError::OutOfRange),
        _ => Err(ParsePercentageError::InvalidInput)
    }
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}

noomcreator

a month ago

3.46ms

87.95kb

// 1. Finish the definition
use std::error::Error;
use std::fmt;
#[derive(Debug, PartialEq)]
pub enum ParsePercentageError {
    InvalidInput,
    OutOfRange,
}
// 2. Implement the `Error` trait
impl fmt::Display for ParsePercentageError {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        match self {
            ParsePercentageError::InvalidInput => write!(f, "Error: Invalid Input!"),
            ParsePercentageError::OutOfRange => write!(f, "Error: Out Of Range!"),
        }
    }
}
impl Error for ParsePercentageError {}
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
    // 3. Implement this function
    match input.parse::<u8>() {
        Ok(number) => {
            if number <= 100 {
                Ok(number)
            } else {
                Err(ParsePercentageError::OutOfRange)
            }
        }
        Err(_) => Err(ParsePercentageError::InvalidInput),
    }
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}

Andy Randrianirina

andyslash

a month ago

3.83ms

87.95kb

use std::{error::Error, fmt::Display};
// 1. Finish the definition
#[derive(Debug, PartialEq)]
pub enum ParsePercentageError {
    InvalidInput,
    OutOfRange,
}
impl Display for ParsePercentageError {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        write!(f, "Error percentage")
    }
}
impl Error for ParsePercentageError {}
// 2. Implement the `Error` trait
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
    // 3. Implement this function
    match input.parse::<u8>() {
        Ok(value) => {
            if value <= 100 {
                Ok(value)
            }
            else {
                Err(ParsePercentageError::OutOfRange)
            }
        }
        Err(_) => Err(ParsePercentageError::InvalidInput)
    }
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}

Daniel Mestas

miel-codeai

a month ago

3.58ms

87.95kb

use std::{error::Error, fmt::Display};
// 1. Finish the definition
#[derive(Debug, PartialEq)]
pub enum ParsePercentageError {
    InvalidInput,
    OutOfRange,
}
// 2. Implement the `Error` trait
impl Display for ParsePercentageError {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        write!(f, "Error percentage")
    }
}
impl Error for ParsePercentageError {}
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
    match input.parse::<u8>() {
        Ok(number) => {
            if number <= 100 {
                Ok(number)
            } else {
                Err(ParsePercentageError::OutOfRange)
            }
        }
        Err(_) => Err(ParsePercentageError::InvalidInput),
    }
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}

Chih Ying Yen

xavierforge

a month ago

3.35ms

87.95kb

// 1. Finish the definition
#[derive(Debug, PartialEq)]
pub enum ParsePercentageError {
    InvalidInput,
    OutOfRange
}
impl std::fmt::Display for ParsePercentageError {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        write!(f, "Pasrse Error!")
    }
}
// 2. Implement the `Error` trait
impl std::error::Error for ParsePercentageError {}
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
    // 3. Implement this function
    if let Ok(value) = input.parse::<u8>() {
        if value <= 100 { 
            Ok(value) 
        } else { 
            Err(ParsePercentageError::OutOfRange)
        }
    } else {
        Err(ParsePercentageError::InvalidInput)
    }
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}

Evgenii Uglanov

winchest3r

a month ago

4.28ms

87.95kb

// 1. Finish the definition
#[derive(Debug, PartialEq)]
pub enum ParsePercentageError {
    InvalidInput,
    OutOfRange,
}
// 2. Implement the `Error` trait
impl std::fmt::Display for ParsePercentageError {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        write!(f, "parse percentage error")
    }
}
impl std::error::Error for ParsePercentageError {}
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
    if let Ok(value) = str::parse::<u8>(input) {
        return if value <= 100 { Ok(value) } else { Err(ParsePercentageError::OutOfRange) };
    } else {
        return Err(ParsePercentageError::InvalidInput);
    }
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}

manu3618

a month ago

3.34ms

87.95kb

use std::error::Error;
use std::fmt;
// 1. Finish the definition
#[derive(Debug, Eq, PartialEq)]
pub enum ParsePercentageError {
    InvalidInput,
    OutOfRange,
}
// 2. Implement the `Error` trait
impl Error for ParsePercentageError {}
impl fmt::Display for ParsePercentageError {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        write!(f, "{:?}", self)
    }
}
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
    // 3. Implement this function
 
    match input.parse::<u8>() {
        Ok(a) if a <= 100 => Ok(a),
        Ok(_) => Err(ParsePercentageError::OutOfRange),
        _ => Err(ParsePercentageError::InvalidInput),
    }
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}

Fatih

0fatih

a month ago

3.25ms

87.95kb

// 1. Finish the definition
#[derive(Debug, PartialEq)]
pub enum ParsePercentageError {
    InvalidInput,
    OutOfRange,
}
// 2. Implement the `Error` trait
impl std::fmt::Display for ParsePercentageError {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> Result<(), std::fmt::Error> {
        match self {
            ParsePercentageError::InvalidInput => write!(f,"Err(ParsePercentageError::InvalidInput)"),
            ParsePercentageError::OutOfRange => write!(f,"Err(ParsePercentageError::OutOfRange)")
        }
    }
}
impl std::error::Error for ParsePercentageError {}
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
    // 3. Implement this function
    let n = input.parse::<u8>().map_err(|_| ParsePercentageError::InvalidInput)?;
    if n > 100 {
        return Err(ParsePercentageError::OutOfRange);
    }
    Ok(n)
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}

Marco Coccato

Ocrambana

a month ago

3.69ms

87.95kb

use std::fmt;
// 1. Finish the definition
#[derive(Debug, PartialEq)]
pub enum ParsePercentageError
{
    InvalidInput,
    OutOfRange,
}
// 2. Implement the `Error` trait
impl std::fmt::Display for ParsePercentageError
{
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result
    {
        match self
        {
            ParsePercentageError::InvalidInput => write!(f,"ParsePercentageError::InvalidInput"),
            ParsePercentageError::OutOfRange => write!(f,"ParsePercentageError::OutOfRange"),
        }
    }
}
impl std::error::Error for ParsePercentageError{}
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError>
{
    match input.parse::<u8>()
    {
        Ok(n) if n <=100 => Ok(n),
        Err(_) => Err(ParsePercentageError::InvalidInput),
        _ => Err(ParsePercentageError::OutOfRange)
    }
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}

slaws

a month ago

4.14ms

87.95kb

use std::error::Error;
use std::fmt;
// 1. Finish the definition
#[derive(Debug,PartialEq)]
pub enum ParsePercentageError {
    InvalidInput,
    OutOfRange
}
impl fmt::Display for ParsePercentageError {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        match self {
            ParsePercentageError::InvalidInput => {
                return write!(f, "invalid input");
            },
            ParsePercentageError::OutOfRange => {
                return write!(f, "out of range item");
            }
        }
    }
}
impl Error for ParsePercentageError {
}
// 2. Implement the `Error` trait
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
    // 3. Implement this function
    if let Ok(i) = input.parse::<u8>() {
        if i > 100 || i < 0 {
            return Err(ParsePercentageError::OutOfRange);
        }
        return Ok(i);
    } else {
        return Err(ParsePercentageError::InvalidInput);
    }
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}

Evrins Hu

evrins

a month ago

3.74ms

87.95kb

use std::fmt::{Debug, Display, Formatter};
// 1. Finish the definition
#[derive(Debug, PartialEq)]
pub enum ParsePercentageError {
    InvalidInput,
    OutOfRange,
}
impl Display for ParsePercentageError {
    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
        match self {
            ParsePercentageError::OutOfRange => {
                write!(f, "The value is out of range")
            }
            ParsePercentageError::InvalidInput => {
                write!(f, "The input is invalid")
            }
        }
    }
}
// 2. Implement the `Error` trait
impl std::error::Error for ParsePercentageError {}
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
    // 3. Implement this function
    let x = input
        .parse::<i64>()
        .map_err(|_| ParsePercentageError::InvalidInput)?;
    if x < 0 || x > 100 {
        Err(ParsePercentageError::OutOfRange)
    } else {
        Ok(x as u8)
    }
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}

Jai

jsat97

a month ago

3.53ms

87.95kb

// 1. Finish the definition
use std::error::Error;
use std::fmt;
#[derive(Debug, PartialEq)]
pub enum ParsePercentageError {
    InvalidInput,
    OutOfRange,
}
// 2. Implement the `Error` trait
impl Error for ParsePercentageError {  }
impl fmt::Display for ParsePercentageError  {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        match self {
            Self::InvalidInput => write!(f, "ParsePercentageError::InvalidInput"),
            Self::OutOfRange => write!(f, "ParsePercentageError::OutOfRange"),
        }
    }
}
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
    // 3. Implement this function
    if let Ok(val) = input.parse::<u8>() {
        if val > 100 {
            return Err(ParsePercentageError::OutOfRange);
        }
        return Ok(val);
    }
    Err(ParsePercentageError::InvalidInput)
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}

johndoe30bc

a month ago

3.27ms

87.95kb

use std::error::Error;
use std::fmt::Display;
const ERR_INVALID_INPUT: &str = "Invalid input";
const ERR_PERCENTAGE_OUT_OF_RANGE: &str = "Percentage out of range";
#[derive(Debug, PartialEq)]
pub enum ParsePercentageError {
    InvalidInput,
    OutOfRange,
}
impl Display for ParsePercentageError {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        use ParsePercentageError::*;
        let err_str = match self {
            InvalidInput => ERR_INVALID_INPUT,
            OutOfRange => ERR_PERCENTAGE_OUT_OF_RANGE,
        }
        .to_string();
        write!(f, "{err_str}")
    }
}
impl Error for ParsePercentageError {}
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
    let p = input
        .parse::<u8>()
        .map_err(|_| ParsePercentageError::InvalidInput)?;
    if p > 100 {
        Err(ParsePercentageError::OutOfRange)
    } else {
        Ok(p)
    }
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}

aghia98

a month ago

3.93ms

87.95kb

use std::error::Error;
use std::fmt;
// 1. Finish the definition
#[derive(Debug,PartialEq)]
pub enum ParsePercentageError{
    InvalidInput,
    OutOfRange
}
impl fmt::Display for ParsePercentageError{
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        match self{
            Self::InvalidInput => write!(f, "This is my personalized Invalid Input"),
            Self::OutOfRange => write!(f, "This is my personal Out Of Range")
        }
    }
}
// 2. Implement the `Error` trait
impl Error for ParsePercentageError{ //trait Error: Display + Debug
} 
pub fn parse_percentage(input: &str) -> Result<u8, ParsePercentageError> {
    // 3. Implement this function
    match input.parse::<u8>(){
        Ok(number)=>{
            if number<=100{
                Ok(number)
            }else{
                Err(ParsePercentageError::OutOfRange)
            }
        },
        Err(_)=>{
            Err(ParsePercentageError::InvalidInput)
        }
    }
}
// Example usage
pub fn main() {
    let result = parse_percentage("50");
    println!("{:?}", result); // Should print: Ok(50)
    let result = parse_percentage("101");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::OutOfRange)
    let result = parse_percentage("abc");
    println!("{:?}", result); // Should print: Err(ParsePercentageError::InvalidInput)
}