Auto merge of #110353 - the8472:in-place-flatten-chunks, r=cuviper

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Expand in-place iteration specialization to Flatten, FlatMap and ArrayChunks

This enables the following cases to collect in-place:

```rust
let v = vec![[0u8; 4]; 1024]
let v: Vec<_> = v.into_iter().flatten().collect();

let v: Vec<Option<NonZeroUsize>> = vec![NonZeroUsize::new(0); 1024];
let v: Vec<_> = v.into_iter().flatten().collect();

let v = vec![u8; 4096];
let v: Vec<_> = v.into_iter().array_chunks::<4>().collect();
```

Especially the nicheful-option-flattening should be useful in real code.

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This commit is contained in:

bors 2023-11-28 12:22:16 +00:00

parent 9b5e966d3d 0d7645cd5d

commit 7cf580684c

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

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