1 unstable release
0.1.0 | Aug 2, 2022 |
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#2577 in Rust patterns
5KB
96 lines
README
Control macros for Option
and Result
.
Helps you change this:
fn returns_early_with_value(input: Result<i32, String>) {
// Early return when something is wrong.
let input: i32 = match input {
Ok(value) => value,
Err(_) => return,
};
// Use it normally below...
println!("Input is: {}", input);
}
into
use ctrl_macros::{ok_or_return};
fn returns_early_with_value(input: Result<i32, String>) {
let input: i32 = ok_or_return!(input);
println!("Input is: {}", input);
}
Examples
let x = ok_or!(x, return 42);
for i in 0..5 {
let x = ok_or_continue!(x);
}
for i in 0..5 {
let x = ok_or_break!(x);
}
and some_or
equivalents
some_or!
some_or_return!
some_or_continue!
some_or_break!
License
ctrl_macros
is dual licensed under either:
- MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)
- Apache License, Version 2.0, (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0) at your option.
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.