0.2.0 - This version may not be safe as it has not been updated for a long time. Find out if your coding project uses this component and get notified of any reported security vulnerabilities with Meterian-X Open Source Security Platform
Maintain your licence declarations and avoid unwanted licences to protect your IP the way you intended.
MPL-2.0 - Mozilla Public License 2.0
This crate extends Option with additional methods, currently:
containsmap_or2 (as a replacement for map_or)map_or_else2 (as a replacement for map_or_else)Its sister crate is result-ext, which extends Result.
Rust 1.0 or newer.
Add the library as a dependency to your project by inserting
option-ext = "0.2.0"into the [dependencies] section of your Cargo.toml file.
use option_ext::OptionExt;
fn example_contains() {
let x: Option<u32> = Some(2);
assert_eq!(x.contains(&2), true);
let x: Option<u32> = Some(3);
assert_eq!(x.contains(&2), false);
let x: Option<u32> = None;
assert_eq!(x.contains(&2), false);
}
fn example_map_or2() {
let x = Some("bar");
assert_eq!(x.map_or2(|v| v.len(), 42), 3);
let x: Option<&str> = None;
assert_eq!(x.map_or2(|v| v.len(), 42), 42);
}
fn example_map_or_else2() {
let k = 23;
let x = Some("bar");
assert_eq!(x.map_or_else2(|v| v.len(), || 2 * k), 3);
let x: Option<&str> = None;
assert_eq!(x.map_or_else2(|v| v.len(), || 2 * k), 46);
}