Trait core_extensions::BoolExt

source · [−]
pub trait BoolExt: TypeIdentity<Type = bool> + Sized {
    fn if_true<T, F>(self, some: F) -> Option<T>
    where
        F: FnOnce() -> T,
    { ... }
    fn if_false<T, F>(self, some: F) -> Option<T>
    where
        F: FnOnce() -> T,
    { ... }
}
Available on crate feature bools only.
Expand description

Extension trait for bool.

Provided Methods

Returns Some(some()) if self is true, otherwise returns None.

This method is usable in all versions supported by this library, and is equivalent to the bool::then method, which was stabilized in Rust 1.50.

Example
use core_extensions::BoolExt;

assert_eq!(true .if_true(|| 100 ), Some(100));
assert_eq!(false.if_true(|| 100 ), None);

Returns Some(some()) if self is false, otherwise returns None.

Example
use core_extensions::BoolExt;

assert_eq!(false.if_false(|| 100 ), Some(100));
assert_eq!(true .if_false(|| 100 ), None);

Implementations on Foreign Types

Implementors