# 1.28.0[−][src]Trait core::ops::RangeBounds

    pub trait RangeBounds<T: ?Sized> {
        fn start_bound(&self) -> Bound<&T>;
        fn end_bound(&self) -> Bound<&T>;

        fn contains<U: ?Sized>(&self, item: &U) -> bool
        where
            T: PartialOrd<U>,
            U: PartialOrd<T>,
        { ... }
    }

`RangeBounds` is implemented by Rust's built-in range types, produced by range syntax like `..`, `a..`, `..b`, `..=c`, `d..e`, or `f..=g`.

## Required methods

### `fn start_bound(&self) -> Bound<&T>`

Start index bound.

Returns the start value as a `Bound`.

# Examples

    use std::ops::Bound::*;
    use std::ops::RangeBounds;

    assert_eq!((..10).start_bound(), Unbounded);
    assert_eq!((3..10).start_bound(), Included(&3));

Run

### `fn end_bound(&self) -> Bound<&T>`

End index bound.

Returns the end value as a `Bound`.

# Examples

    use std::ops::Bound::*;
    use std::ops::RangeBounds;

    assert_eq!((3..).end_bound(), Unbounded);
    assert_eq!((3..10).end_bound(), Excluded(&10));

Run
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## Provided methods

### `fn contains<U: ?Sized>(&self, item: &U) -> bool where
T: PartialOrd<U>,
U: PartialOrd<T>,` 1.35.0

Returns `true` if `item` is contained in the range.

# Examples

    use std::f32;

    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));

Run
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## Implementors

### `impl<'_, T> RangeBounds<T> for Range<&'_ T>`[src]

#### `fn start_bound(&self) -> Bound<&T>`[src]

#### `fn end_bound(&self) -> Bound<&T>`[src]

### `impl<'_, T> RangeBounds<T> for RangeFrom<&'_ T>`[src]

#### `fn start_bound(&self) -> Bound<&T>`[src]

#### `fn end_bound(&self) -> Bound<&T>`[src]

### `impl<'_, T> RangeBounds<T> for RangeInclusive<&'_ T>`[src]

#### `fn start_bound(&self) -> Bound<&T>`[src]

#### `fn end_bound(&self) -> Bound<&T>`[src]

### `impl<'_, T> RangeBounds<T> for RangeTo<&'_ T>`[src]

#### `fn start_bound(&self) -> Bound<&T>`[src]

#### `fn end_bound(&self) -> Bound<&T>`[src]

### `impl<'_, T> RangeBounds<T> for RangeToInclusive<&'_ T>`[src]

#### `fn start_bound(&self) -> Bound<&T>`[src]

#### `fn end_bound(&self) -> Bound<&T>`[src]

### `impl<'a, T: ?Sized + 'a> RangeBounds<T> for (Bound<&'a T>, Bound<&'a T>)`[src]

#### `fn start_bound(&self) -> Bound<&T>`[src]

#### `fn end_bound(&self) -> Bound<&T>`[src]

### `impl<T> RangeBounds<T> for (Bound<T>, Bound<T>)`[src]

#### `fn start_bound(&self) -> Bound<&T>`[src]

#### `fn end_bound(&self) -> Bound<&T>`[src]

### `impl<T> RangeBounds<T> for Range<T>`[src]

#### `fn start_bound(&self) -> Bound<&T>`[src]

#### `fn end_bound(&self) -> Bound<&T>`[src]

### `impl<T> RangeBounds<T> for RangeFrom<T>`[src]

#### `fn start_bound(&self) -> Bound<&T>`[src]

#### `fn end_bound(&self) -> Bound<&T>`[src]

### `impl<T> RangeBounds<T> for RangeInclusive<T>`[src]

#### `fn start_bound(&self) -> Bound<&T>`[src]

#### `fn end_bound(&self) -> Bound<&T>`[src]

### `impl<T> RangeBounds<T> for RangeTo<T>`[src]

#### `fn start_bound(&self) -> Bound<&T>`[src]

#### `fn end_bound(&self) -> Bound<&T>`[src]

### `impl<T> RangeBounds<T> for RangeToInclusive<T>`[src]

#### `fn start_bound(&self) -> Bound<&T>`[src]

#### `fn end_bound(&self) -> Bound<&T>`[src]

### `impl<T: ?Sized> RangeBounds<T> for RangeFull`[src]

#### `fn start_bound(&self) -> Bound<&T>`[src]

#### `fn end_bound(&self) -> Bound<&T>`[src]

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