Thread

Why isn't mutable a subtype of immutable, or vice versa?

28 points · 56 comments · ibobev

Sharlin · 1789893091 · focus · HN ↗
As a total aside, the names `car` and `cdr` for "head" and "tail" are honestly some of the most baffling historical relics in all of computing.
1. MiroslavPokorny · 1789893536 · focus · HN ↗
  What i dont understand is why does everything have to be so brief. Take car and cdr there is only one character difference, more character differences is a good thing not bad.
  1. Sharlin · 1789894649 · focus · HN ↗
    The usual convention (which also occurs in natural languages) is that often-used words should be short, rarely used should (and can afford to be) more descriptive.

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