Adding missing size_hint for UnicodeSentences, UnicodeWords, and UnicodeWordIndices #128
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
I don't expect this to noticeably impact performance either positively or negatively for most use-cases, especially because
Iterator::collectrelies on the lower bound ofsize_hintwhich will remain unchanged after this PR.However the upper bound will go from
NonetoSome(upper), which may benefit downstream crates that use it as a heuristic for pre-allocation size.Note also that I forwarded the implementation of
size_hintto the inner iterator, which means it is UAX#29 agnostic. I'm not enough of a Unicode expert to know if e.g. word boundaries can be empty, so it may not be the tightest possible upper bound for longer strings.