right
(Redirected from Identity function)
Right
(:)
Right, a.k.a. dex (from Latin dexter), is a function that returns its rightmost argument.
(:)[1;2] 2
When it accepts only one argument, it could be referred to as identity or identity function.
(::)1 1
In some dialects the identity function could serve as a placeholder for missing indices in square-bracket indexing or for missing arguments in projections.