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# Exclusive Bit-Slice Reverse Exact Chunking
This iterator yields successive non-overlapping mutable chunks of a bit-slice.
Chunking advances one sub-slice at a time, starting at the end of the bit-slice.
If the original bit-slice’s length is not evenly divided by the chunk width,
then the leftover segment at the front is not iterated, but can be accessed with
the [`.into_remainder()`] or [`.take_remainder()`] methods.
It is created by the [`BitSlice::rchunks_exact_mut`] method.
## Original
[`slice::RChunksExactMut`](core::slice::RChunksExactMut)
## API Differences
This iterator marks all yielded bit-slices as `::Alias`ed.
## Examples
```rust
use bitvec::prelude::*;
let bits = bits![mut 0, 1, 0, 0, 0, 1, 1, 1];
let mut chunks = unsafe {
bits.rchunks_exact_mut(3).remove_alias()
};
chunks.next().unwrap().fill(false);
chunks.next().unwrap().fill(true);
assert!(chunks.next().is_none());
chunks.take_remainder().copy_from_bitslice(bits![1, 0]);
assert!(chunks.take_remainder().is_empty());
assert_eq!(bits, bits![1, 0, 1, 1, 1, 0, 0, 0]);
```
[`BitSlice::rchunks_exact_mut`]: crate::slice::BitSlice::rchunks_exact_mut
[`.into_remainder()`]: Self::into_remainder
[`.take_remainder()`]: Self::take_remainder
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