result-ext

Introduction

This crate extends Result with additional methods, currently:

• contains
• contains_err

Its sister crate is option-ext, which extends Option.

Requirements

Rust 1.0 or newer.

Usage

Dependency

Add the library as a dependency to your project by inserting

result-ext = "0.0.0"

into the [dependencies] section of your Cargo.toml file.

Example

use result_ext::ResultExt;

fn example() {
    use result_ext::ResultExt;
    
    let x: Result<u32, &str> = Ok(2);
    assert_eq!(x.contains(&2), true);
    
    let x: Result<u32, &str> = Ok(3);
    assert_eq!(x.contains(&2), false);
    
    let x: Result<u32, &str> = Err("Some error message");
    assert_eq!(x.contains(&2), false);

    let x: Result<u32, &str> = Ok(2);
    assert_eq!(x.contains_err(&"Some error message"), false);
    
    let x: Result<u32, &str> = Err("Some error message");
    assert_eq!(x.contains_err(&"Some error message"), true);
    
    let x: Result<u32, &str> = Err("Some other error message");
    assert_eq!(x.contains_err(&"Some error message"), false);
}