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(librep.info)Local Functions

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Local Functions
---------------

   The `defun' special form allows globally-accessible functions to be
defined. It is often desirable to declare functions local to the
current lexical environment. The `let' and `let*' special form that
were introduced earlier allow this since named functions are simply
functional values stored in variables.

   For example,

     (let
         ((temporary-function (lambda (x)
                                (+ x 42))))
       ...
       (temporary-function 20)
       ...