Documentation

Creates a tuple by pairing something with itself.

>>> dupe "foo"
("foo","foo")
>>> dupe ()
((),())

Apply a function, with the result in the fst slot, and the value in the other.

A dual to mapToSnd

>>> mapToFst (+1) 10
(11,10)

Apply a function, with the result in the second slot, and the value in the other.

A dual to mapToFst.

>>> mapToSnd (+1) 10
(10,11)

Maps a function over both elements of a tuple.

>>> mapBoth ("Hello " <>) ("Alice", "Bob")
("Hello Alice","Hello Bob")