52 lines
2.1 KiB
Plaintext
52 lines
2.1 KiB
Plaintext
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'\"
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'\" Copyright (c) 1993 The Regents of the University of California.
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'\" All rights reserved.
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'\"
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'\" Permission is hereby granted, without written agreement and without
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'\" license or royalty fees, to use, copy, modify, and distribute this
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'\" documentation for any purpose, provided that the above copyright
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'\" notice and the following two paragraphs appear in all copies.
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'\"
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'\" IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY
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'\" FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
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'\" ARISING OUT OF THE USE OF THIS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
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'\" CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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'\"
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'\" THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
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'\" INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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'\" AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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'\" ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
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'\" PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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'\"
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'\" $Header: /user6/ouster/tcl/man/RCS/set.n,v 1.1 93/06/07 16:48:27 ouster Exp $ SPRITE (Berkeley)
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'\"
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.so man.macros
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.HS set tcl
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.BS
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'\" Note: do not modify the .SH NAME line immediately below!
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.SH NAME
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set \- Read and write variables
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.SH SYNOPSIS
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\fBset \fIvarName \fR?\fIvalue\fR?
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.BE
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.SH DESCRIPTION
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.PP
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Returns the value of variable \fIvarName\fR.
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If \fIvalue\fR is specified, then set
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the value of \fIvarName\fR to \fIvalue\fR, creating a new variable
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if one doesn't already exist, and return its value.
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If \fIvarName\fR contains an open parenthesis and ends with a
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close parenthesis, then it refers to an array element: the characters
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before the first open parenthesis are the name of the array, and the characters
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between the parentheses are the index within the array.
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Otherwise \fIvarName\fR refers to a scalar variable.
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If no procedure is active, then \fIvarName\fR refers to a global
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variable.
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If a procedure is active, then \fIvarName\fR refers to a parameter
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or local variable of the procedure unless the \fIglobal\fR command
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has been invoked to declare \fIvarName\fR to be global.
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.SH KEYWORDS
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read, write, variable
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