The semantic elegance of applicative languages

Abstract

In what does the alleged superiority of applicative languages consist? In the last analysis the answer must be in terms of the reduction in the time required to produce a correct program to solve a given problem. On reflection I decided that the best way to demonstrate this would be to take some reasonably non-trivial problem and show how, by proceeding within a certain kind of applicative language framework it was possible to develop a working solution with a fraction of the effort that would have been necessary in a conventional imperative language. The particular problem I have chosen also brings out a number of general points of interest which I shall discuss briefly afterwards.