read-eval-print loop

<language, LISP, 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)))).

Last updated: 2003-06-23

Nearby terms:

RE ♦ re ♦ read-eval-print loop ♦ README file ♦ Read-Only Memory ♦ read-only user

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