Avoid creating empty vectors in vector.Apply #5540
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vector.Apply can create a large number of empty (zero-length) vectors through calls to vector.rip, generating substantial garbage. Fix that by changing rip to return nil instead of a slice of empty vectors, changing Apply to skip the recursive call when it sees a nil from rip and substitute a nil vector in place of the skipped call's result, and changing NewTagMap to tolerate nil vectors so NewDynamic will as well.
mattnibs
approved these changes
Dec 18, 2024
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vector.Apply can create a large number of empty (zero-length) vectors through calls to vector.rip, generating substantial garbage. Fix that by changing rip to return nil instead of a slice of empty vectors, changing Apply to skip the recursive call when it sees a nil from rip and substitute a nil vector in place of the skipped call's result, and changing NewTagMap to tolerate nil vectors so NewDynamic will as well.