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A comment on To learn a new language, read its standard library. Parent comment

Re:To learn a new language, read its standard library by filoeleven on Tuesday October 26, 2021 @05:19PM (#29006409)
One thing I have wondered about is the number of multi-arity functions that individually specify 1, 2, 3, 4, 5 argument cases in 3rd-party library code. Is it a result of people thinking that’s idiomatic, or is

  ([a b c d])
performant enough to matter in library code instead of using

  ([a b & more])
? I hope it’s the former.
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