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78 lines
2.1 KiB
Plaintext
78 lines
2.1 KiB
Plaintext
NAME
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param - value of argument in a user-function call
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SYNOPSIS
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param([n])
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TYPES
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n nonnegative integer
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return any
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DESCRIPTION
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The function param(n) can be used only within the body of the
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definition of a function.
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If that function is f()
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[[ which may have been defined with named arguments as in f(x,y,z))
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and either the number of arguments or the value of an argument
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in an anticipated call to f() is to be used, the number of
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arguments in that call will then be returned by:
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param(0)
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and the value of the n-th argument by:
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param(n)
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Note that unlike the argv() builtin, param(1) is the 1st parameter
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and param(param(0) is the last.
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EXAMPLE
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; define f() {
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;; local n, v = 0;
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;; for (n = 1; n <= param(0); n++)
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;; v += param(n)^2;
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;; return v;
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;; }
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; print f(), f(1), f(1,2), f(1,2,3)
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0 1 5 14
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LIMITS
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none
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LINK LIBRARY
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none
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SEE ALSO
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argv, command
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## Copyright (C) 1999-2006 Landon Curt Noll
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##
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## Calc is open software; you can redistribute it and/or modify it under
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## the terms of the version 2.1 of the GNU Lesser General Public License
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## as published by the Free Software Foundation.
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##
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## Calc is distributed in the hope that it will be useful, but WITHOUT
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## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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## or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
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## Public License for more details.
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##
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## A copy of version 2.1 of the GNU Lesser General Public License is
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## distributed with calc under the filename COPYING-LGPL. You should have
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## received a copy with calc; if not, write to Free Software Foundation, Inc.
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## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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##
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## @(#) $Revision: 30.1 $
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## @(#) $Id: param,v 30.1 2007/03/16 11:10:42 chongo Exp $
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## @(#) $Source: /usr/local/src/cmd/calc/help/RCS/param,v $
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##
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## Under source code control: 1996/03/12 23:10:01
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## File existed as early as: 1996
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##
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## chongo <was here> /\oo/\ http://www.isthe.com/chongo/
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## Share and enjoy! :-) http://www.isthe.com/chongo/tech/comp/calc/
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