Trait ChangeError 

pub trait ChangeError<T> {
    // Required method
    fn set_error(self, s: &str) -> Result<T, String>;
}

Import this trait to get the set_error method on Results and Options

Examples

use set_error::ChangeError;
let foo: Option<u32> = None;
assert_eq!(Err(String::from("erorr")), foo.set_error("erorr"));

Required Methods

fn set_error(self, s: &str) -> Result<T, String>

If an error is present it is replaced with the string passed into this method.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl<T, E> ChangeError<T> for Result<T, E>

fn set_error(self, s: &str) -> Result<T, String>

impl<T> ChangeError<T> for Option<T>

fn set_error(self, s: &str) -> Result<T, String>

Implementors