6 releases
0.2.1 | Apr 8, 2023 |
---|---|
0.2.0 | Mar 24, 2023 |
0.1.1 | Mar 20, 2023 |
0.0.2 | Mar 17, 2023 |
#2978 in Rust patterns
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7KB
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Some To Err
This crate offers a pair of traits for effortlessly transforming Option
into Result
, elegantly converting Some
values into Err
while gracefully handling None
values as Ok
. Unleash the full potential of Rust's error handling capabilities with these versatile traits.
Usage
Add this to your crate by:
cargo add some-to-err
Or add this to your Cargo.toml
:
[dependencies]
some-to-err = "0.2.0"
and then:
use some_to_err::ErrOr;
{
let some: Option<&str> = Some("Error");
let result = some.err_or(42);
assert_eq!(result, Err("Error"));
}
{
let none: Option<&str> = None;
let result = none.err_or(42);
assert_eq!(result, Ok(42));
}
use some_to_err::ErrOrElse;
{
let input: Option<&str> = None;
let result = input.err_or_else(|| "Ok");
assert_eq!(result, Ok("Ok"));
}
{
let input = Some("Error");
let result = input.err_or_else(|| "Ok");
assert_eq!(result, Err("Error"));
}