…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.
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?
> 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.
