Problem Statement

Create a function, compose,   whose two arguments   f   and   g,   are both functions with one argument.

The result of compose is to be a function of one argument, (lets call the argument   x),   which works like applying function   f   to the result of applying function   g   to   x.

Reference: Function composition Hint: In some languages, implementing compose correctly requires creating a closure.

Let's start with the solution:

def *2 2 * enddef
def ++ 1 + enddef
def composite swap exec swap exec enddef

getid ++ getid *2 3 composite print /# result: 7 #/