bors df0295f071 Auto merge of #110353 - the8472:in-place-flatten-chunks, r=cuviper ... 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.		2023-11-28 12:22:16 +00:00
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arc.rs
autotraits.rs
borrow.rs
boxed.rs
btree_set_hash.rs
c_str.rs
const_fns.rs
cow_str.rs
fmt.rs
heap.rs
lib.rs	Auto merge of #110353 - the8472:in-place-flatten-chunks, r=cuviper	2023-11-28 12:22:16 +00:00
linked_list.rs
rc.rs
slice.rs
str.rs	optimize str::iter::Chars::advance_by	2023-11-27 22:06:35 +01:00
string.rs
thin_box.rs
vec.rs	Auto merge of #110353 - the8472:in-place-flatten-chunks, r=cuviper	2023-11-28 12:22:16 +00:00
vec_deque.rs