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Diffstat (limited to 'module/srfi/srfi-16.scm')
-rw-r--r-- | module/srfi/srfi-16.scm | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/module/srfi/srfi-16.scm b/module/srfi/srfi-16.scm new file mode 100644 index 000000000..d103ce979 --- /dev/null +++ b/module/srfi/srfi-16.scm @@ -0,0 +1,51 @@ +;;; srfi-16.scm --- case-lambda + +;; Copyright (C) 2001, 2002, 2006, 2009, 2014 Free Software Foundation, Inc. +;; +;; This library is free software; you can redistribute it and/or +;; modify it under the terms of the GNU Lesser General Public +;; License as published by the Free Software Foundation; either +;; version 3 of the License, or (at your option) any later version. +;; +;; This library is distributed in the hope that it will be useful, +;; but WITHOUT ANY WARRANTY; without even the implied warranty of +;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +;; Lesser General Public License for more details. +;; +;; You should have received a copy of the GNU Lesser General Public +;; License along with this library; if not, write to the Free Software +;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + +;;; Author: Martin Grabmueller + +;;; Commentary: + +;; Implementation of SRFI-16. `case-lambda' is a syntactic form +;; which permits writing functions acting different according to the +;; number of arguments passed. +;; +;; The syntax of the `case-lambda' form is defined in the following +;; EBNF grammar. +;; +;; <case-lambda> +;; --> (case-lambda <case-lambda-clause>) +;; <case-lambda-clause> +;; --> (<signature> <definition-or-command>*) +;; <signature> +;; --> (<identifier>*) +;; | (<identifier>* . <identifier>) +;; | <identifier> +;; +;; The value returned by a `case-lambda' form is a procedure which +;; matches the number of actual arguments against the signatures in +;; the various clauses, in order. The first matching clause is +;; selected, the corresponding values from the actual parameter list +;; are bound to the variable names in the clauses and the body of the +;; clause is evaluated. + +;;; Code: + +(define-module (srfi srfi-16) + #:re-export (case-lambda)) + +;; Case-lambda is now provided by core psyntax. |