Defining and Using FunctionsWithout DEFUN

; Creating and using a function, stored as the

; Value of a symbol:

> (setq double (function (lambda (x)(+ x x))))

#<Function...>

> (funcall double 7)

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; Creating a function, as DEFUN does, but without ; it.

> (setf (symbol-function 'triple

(function (lambda (x)(* 3 x))) )

#<Function...>

> (triple 7)

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#<Function...> is implementation-dependent; e.g., it could be #<Lambda-closure...>, etc.

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