first() in iterator
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Description
std::iter::Iterator has a method to get the last element, last(). But why isn't there a first() to get the first element?
There are times when first() comes handy, especially after filtering and/or sorting the items. Though it's possible to use nth(0) in such cases, first() would be cleaner.
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First steps
- Read the whole issue, then the project's contributing guide.
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Research direction
The issue names std::iter::Iterator, last(), and nth(0), but no repository file or test. Start by comparing those documented methods and the RFC process; done means a clear decision and accepted proposal for whether first() should be added.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- rust
- Domain
- backend-api-design
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100