Function/Operator/Hyperator Assignment

A←fn assigns the function fn to A. A←op1 assigns the monadic operator op1 to A. A←op2 assigns the dyadic operator op2 to A.

A is an assignable name, fn, op1, and op2 are an arbitrary function, monadic or dyadic operator.

For example, the function F←⍴∘⍴¨ when applied to an array, returns the rank of each item.