read-eval-print loop

Computing Dictionary

read-eval-print loop definition

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)))).

The Free On-line Dictionary of Computing, © Denis Howe 2010
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