| Allegro CL version 8.2 Unrevised from 8.1 to 8.2. 8.1 version |
Arguments: name lambda-expression
The macro definition for this extension is approximately:
(defmacro excl:named-function (name function)
(declare (ignore name)) `(function ,function))
When compiling a named-function form, the compiler treats the form just like a function form, except that the name is used if possible in the resulting function. This is especially useful for closures of a particular kind, as in the following example:
user(1): (defun get-one-arg-frobber (ix) (named-function frobber (lambda (arg) (frob-by-index ix arg)))) get-one-arg-frobber user(2): (compile *) Warning: While compiling these undefined functions were referenced: frob-by-index. get-one-arg-frobber nil nil user(3): (get-one-arg-frobber 10) #<Closure frobber @ #x2065dea9> user(4):
Note that the name of the closure is taken from the named-function form. Contrast that with the following definition using the more traditional function form:
user(7): (defun get-one-arg-frobber (ix) (function (lambda (arg) (frob-by-index ix arg)))) get-one-arg-frobber user(8): (compile *) Warning: While compiling these undefined functions were referenced: frob-by-index. get-one-arg-frobber nil nil user(9): (get-one-arg-frobber 12) #<Closure (:internal get-one-arg-frobber 0) @ #x20664fa1> user(10):
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This page was not revised from the 8.1 page.
Created 2010.1.21.
| Allegro CL version 8.2 Unrevised from 8.1 to 8.2. 8.1 version |