read-eval-print loopcomputing dictionary

<programming language>

<computer programming> (REPL) A programming structure within LISP which repeatedly reads a form from the user, evaluates it, and displays the result.

A read-eval-print loop forms the basis of the Top-Level shell that programmers of the LISP family of languages interact with.

In many dialects of LISP a very simple REPL could be implemented as:

(loop (print (eval (read)))).

(01 Aug 2003)