core_extensions 0.1.9

This crate provides many extensions to core/std library types.
Documentation 
1
2
3
4
5
6
7
8
9
10

// Used because this crate supports Rust down to 1.20.0
// when `?` for Option was stabilized in Rust 1.22.0
macro_rules! try_opt {
    ($expr:expr) => {
        match $expr {
            Some(v) => v,
            None => return None,
        }
    };
}