read-eval-print loop

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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)))).
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