As for my original question, notice I asked whethe...

# language-proposals

[zvozin]

As for my original question, notice I asked whether someone has submitted a request before, not whether it was useful. The latter is an uninteresting question to ask. If you routinely program pure functional, the answer is an obvious "yes". If you do not, @orangy is right: you're only going to write it one, what do you care.