A Rust library crate that offers the MapSelf trait, implemented on all types.

License

Licensed under either of

• Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.

Contribution

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.

lib.rs:

Example:

let (hour, meridiem) = if use_12_hour_clock {
    self.hour_meridiem() // Yields 12-hour clock time.
        .map_self(|(hour, meridiem)| (hour, Some(meridiem)))
} else {
    (self.hour, None)
};

Example:

// Initialize time to check for double-click.
let mut last_click_time = Instant::now()
    .map_self_or_keep(|now| now.checked_sub(Duration::from_secs(60)));