Add single shortcut for reducing single element enumerables #39549
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rynonl
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…lement I frequently find myself and my team working with enumerables that we know should only contain a single element. Using #first or #last does not adequately protect against those times when the enum has length 0 or > 1, and does nothing to indicate that the enumerable is expected to have exactly 1 element.
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Thank you for the pull request. I have wanted this feature on several occasions! However, this is a duplicate of #26206, which was closed because it is being discussed as an addition to Ruby itself in Ruby Issue 13683. Feel free to voice your support there! |
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Summary
I frequently find myself and my team working with enumerables that we know should only contain a single element. Using #first or #last does not adequately protect against those times when the enum has length 0 or > 1, and does nothing to indicate that the enumerable is expected to have exactly 1 element.