5849a7eca9
Implement advance_by, advance_back_by for iter::Chain Part of #77404. This PR does two things: - implement `Chain::advance[_back]_by` in terms of `advance[_back]_by` on `self.a` and `advance[_back]_by` on `self.b` - change `Chain::nth[_back]` to use `advance[_back]_by` on `self.a` and `nth[_back]` on `self.b` This ensures that `Chain::nth` can take advantage of an efficient `nth` implementation on the second iterator, in case it doesn't implement `advance_by`. cc `@scottmcm` in case you want to review this |
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| .. | ||
| fmt | ||
| hash | ||
| num | ||
| alloc.rs | ||
| any.rs | ||
| array.rs | ||
| ascii.rs | ||
| atomic.rs | ||
| bool.rs | ||
| cell.rs | ||
| char.rs | ||
| clone.rs | ||
| cmp.rs | ||
| intrinsics.rs | ||
| iter.rs | ||
| lazy.rs | ||
| lib.rs | ||
| manually_drop.rs | ||
| mem.rs | ||
| nonzero.rs | ||
| ops.rs | ||
| option.rs | ||
| pattern.rs | ||
| pin.rs | ||
| ptr.rs | ||
| result.rs | ||
| slice.rs | ||
| str_lossy.rs | ||
| str.rs | ||
| time.rs | ||
| tuple.rs | ||