@focused is correct – 1.10-dev has added the identity function.
Documentation
Old Answer:
No such function has been predefined (at least that I’m aware of). It can trivially be written as you’ve done in your question, or more succinctly as &(&1).
@focused is correct – 1.10-dev has added the identity function.
Documentation
Old Answer:
No such function has been predefined (at least that I’m aware of). It can trivially be written as you’ve done in your question, or more succinctly as &(&1).