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You never know where in the code someone will see something for the first time. Are you going to put a comment every place you use obscure features? That would

• philipwhiuk 9y ago
  Or you could encourage colleagues to learn stuff.
  • hk__2 9y ago
    …and not forget anything. Learning is a good thing, but obscure features tend to be forgotten quite quickly because nobody uses them. I recently learned again a very obscure Bash feature by reading a draft I wrote about it 4 years ago. I’ll probably forgot it again.
    • throwanem 9y ago
      If it's used so rarely that you forget what it does, but it only takes a minute to remind yourself about next time you see it - and if when used in those rare cases it significantly simplifies an implementation and reduces effort - then is that such a bad thing?
      • hk__2 9y ago
        > If it's used so rarely that you forget what it does, but it only takes a minute to remind yourself about next time you see it - and if when used in those rare cases it significantly simplifies an implementation and reduces effort - then is that such a bad thing? It’s not if it meets your second and third conditions. I don’t think the comma operator or `void` qualifies as things that can "significantly simplifies an implementation". Even the labels thing looks like a great opportunity for spaghetti code.