# Trait std::collections::range::RangeArgument [−] [src]

    pub trait RangeArgument<T> where
        T: ?Sized, {
        fn start(&self) -> Bound<&T>;
        fn end(&self) -> Bound<&T>;
    }

🔬 This is a nightly-only experimental API. (`collections_range` #30877)

waiting for dust to settle on inclusive ranges

`RangeArgument` is implemented by Rust's built-in range types, produced by range syntax like `..`, `a..`, `..b` or `c..d`.

## Required Methods

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

🔬 This is a nightly-only experimental API. (`collections_range` #30877)

waiting for dust to settle on inclusive ranges

Start index bound.

Returns the start value as a `Bound`.

# Examples

    #![feature(alloc)]
    #![feature(collections_range)]

    extern crate alloc;

    use alloc::range::RangeArgument;
    use alloc::Bound::*;

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

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

🔬 This is a nightly-only experimental API. (`collections_range` #30877)

waiting for dust to settle on inclusive ranges

End index bound.

Returns the end value as a `Bound`.

# Examples

    #![feature(alloc)]
    #![feature(collections_range)]

    extern crate alloc;

    use alloc::range::RangeArgument;
    use alloc::Bound::*;

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

## Implementors

- `impl<T> RangeArgument<T> for RangeToInclusive<T>`
- `impl<'a, T> RangeArgument<T> for (Bound<&'a T>, Bound<&'a T>) where
  T: 'a + ?Sized,`
- `impl<T> RangeArgument<T> for RangeInclusive<T>`
- `impl<T> RangeArgument<T> for (Bound<T>, Bound<T>)`
- `impl<T> RangeArgument<T> for RangeFull where
  T: ?Sized,`
- `impl<T> RangeArgument<T> for RangeFrom<T>`
- `impl<T> RangeArgument<T> for RangeTo<T>`
- `impl<T> RangeArgument<T> for Range<T>`

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