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);