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A comment on Show HN: 15-question programming quiz with answers. Parent comment

Re:Show HN: 15-question programming quiz with answers by thedufer on Tuesday May 23, 2017 @07:07PM (#14406215)
Is that true? I thought most functional programming languages did call-by-reference. I mean, if you have immutable data you can't tell the difference (outside of performance).
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Re:Show HN: 15-question programming quiz with answers by macintux on Wednesday May 24, 2017 @12:32AM (#14407632)
Under the hood it's probably by reference, but the semantics are by value. By reference indicates that the original value can be changed in the called function.

I think. Not a language lawyer.

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