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81 lines
2.4 KiB
Plaintext
81 lines
2.4 KiB
Plaintext
NAME
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argv - count or value of a calc command line supplied argument
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SYNOPSIS
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argv([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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Without args, this builtin returns the number of calc command line
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strings available.
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If the numeric arg is supplied, then the corresponding command line
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string is return, if it exists. Otherwise a nul() value is returned.
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In keeping with the argc/argv convention of C, argv(0) will refer
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to the 1st argv string, and argv(argv()-1) will refer to the last.
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This differs from the way the param() builtin works.
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By default, calc will evaluate all of its command line arguments.
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However, if calc is invoked with -s, all non-dashed options will
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be left as unevaluated strings. Thus:
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calc -i 2+2
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will cause calc to print 4 and enter interactive mode. In this case
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argv() will return 0.
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On the other hand:
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calc -i -s 2+2
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will cause calc to interactive mode. The argv() builtin will return 1
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and argv(0) will return the string "2+2".
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EXAMPLE
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$ calc -s a bb ccc
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> argc = argv();
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> for (i = 0; i < argc; i++) print "argv[": i : '] = "': argv(i) : '"';
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argv[0] = "a"
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argv[1] = "bb"
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argv[2] = "ccc"
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LIMITS
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0 <= n < 2^31
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LINK LIBRARY
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none
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SEE ALSO
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param, usage
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## Copyright (C) 1999 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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## 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
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##
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## @(#) $Revision: 29.2 $
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## @(#) $Id: argv,v 29.2 2000/06/07 14:02:33 chongo Exp $
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## @(#) $Source: /usr/local/src/cmd/calc/help/RCS/argv,v $
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##
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## Under source code control: 1999/11/23 19:45:05
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## File existed as early as: 1999
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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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