pub trait RangeBounds<T>where
T: ?Sized,{
// Required methods
fn start_bound(&self) -> Bound<&T>;
fn end_bound(&self) -> Bound<&T>;
// Provided method
fn contains<U>(&self, item: &U) -> bool
where T: PartialOrd<U>,
U: PartialOrd<T> + ?Sized { ... }
}
馃敩This is a nightly-only experimental API. (
new_range_api
)Expand description
RangeBounds
is implemented by Rust鈥檚 built-in range types, produced
by range syntax like ..
, a..
, ..b
, ..=c
, d..e
, or f..=g
.
Required Methods搂
sourcefn start_bound(&self) -> Bound<&T>
馃敩This is a nightly-only experimental API. (new_range_api
)
fn start_bound(&self) -> Bound<&T>
new_range_api
)Start index bound.
Returns the start value as a Bound
.
搂Examples
use std::ops::Bound::*;
use std::ops::RangeBounds;
assert_eq!((..10).start_bound(), Unbounded);
assert_eq!((3..10).start_bound(), Included(&3));
Provided Methods搂
sourcefn contains<U>(&self, item: &U) -> bool
馃敩This is a nightly-only experimental API. (new_range_api
)
fn contains<U>(&self, item: &U) -> bool
new_range_api
)Returns true
if item
is contained in the range.
搂Examples
assert!( (3..5).contains(&4));
assert!(!(3..5).contains(&2));
assert!( (0.0..1.0).contains(&0.5));
assert!(!(0.0..1.0).contains(&f32::NAN));
assert!(!(0.0..f32::NAN).contains(&0.5));
assert!(!(f32::NAN..1.0).contains(&0.5));
Dyn Compatibility搂
This trait is not dyn compatible.
In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.