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Diffstat (limited to 'doc/lispref/variables.texi')
| -rw-r--r-- | doc/lispref/variables.texi | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/doc/lispref/variables.texi b/doc/lispref/variables.texi index 3b0331847d3..9646daab7ad 100644 --- a/doc/lispref/variables.texi +++ b/doc/lispref/variables.texi @@ -302,6 +302,25 @@ Binding}), but it's impractical to @code{defvar} these variables. the forms, and then make the variables non-special again. @end defspec +@defspec named-let name bindings &rest body +This special form is like @code{let}: It binds the variables in +@var{bindings}, and then evaluates @var{body}. However, +@code{named-let} allows you to call @var{body} recursively by calling +@var{name}, where the arguments passed to @var{name} are used as the +new values of the bound variables in the recursive invocation. + +Here's a trivial example: + +@lisp +(named-let foo + ((a 1) + (b 2)) + (nconc (list a b) + (and (= a 1) (foo 3 4)))) + @result{} (1 2 3 4) +@end lisp +@end defspec + Here is a complete list of the other facilities that create local bindings: |