Macro op::catch

macro_rules! catch {
    ($e:ident -> $stmt:stmt) => { ... };
    ($stmt:stmt) => { ... };
}

A simple macro that catch Result<T, E> and Option<T>

Examples

use op::catch;

let result1: Result<i32, i32> = Ok(1);
let result2: Result<i32, i32> = Ok(2);
assert_eq!(Ok(3), catch!(i32 -> Ok(result1? + result2?)));

let option1: Option<i32> = Some(1);
let option2: Option<i32> = Some(2);
assert_eq!(Some(3), catch!(Some(option1? + option2?)));