Man page or keyword search:   man All Sections 1 - General Commands 2 - System Calls 3 - Subroutines, Functions 4 - Special Files 5 - File Formats 6 - Games and Screensavers 7 - Macros and Conventions 8 - Maintenence Commands 9 - Kernel Interface New Commands Server 4.4BSD AIX Alpinelinux Archlinux Aros BSDOS BSDi Bifrost CentOS Cygwin Darwin Debian DigitalUNIX DragonFly ElementaryOS Fedora FreeBSD Gentoo GhostBSD HP-UX Haiku Hurd IRIX Inferno JazzOS Kali Knoppix LinuxMint MacOSX Mageia Mandriva Manjaro Minix MirBSD NeXTSTEP NetBSD OPENSTEP OSF1 OpenBSD OpenDarwin OpenIndiana OpenMandriva OpenServer OpenSuSE OpenVMS Oracle PC-BSD Peanut Pidora Plan9 QNX Raspbian RedHat Scientific Slackware SmartOS Solaris SuSE SunOS Syllable Tru64 UNIXv7 Ubuntu Ultrix UnixWare Xenix YellowDog aLinux   3202 pages apropos Keyword Search (all sections) Output format html ascii pdf view pdf save postscript

variable(n)		     Tcl Built-In Commands		   variable(n)

______________________________________________________________________________

NAME
       variable - create and initialize a namespace variable

SYNOPSIS
       variable ?name value...? name ?value?
_________________________________________________________________

DESCRIPTION
       This command is normally used within a namespace eval command to create
       one or more variables within a namespace.  Each variable name  is  ini‐
       tialized with value.  The value for the last variable is optional.

       If  a  variable	name  does not exist, it is created.  In this case, if
       value is specified, it is assigned to the newly created	variable.   If
       no  value  is  specified,  the  new variable is left undefined.	If the
       variable already exists, it is set to value if value  is	 specified  or
       left  unchanged	if  no	value is given.	 Normally, name is unqualified
       (does not include the names of  any  containing	namespaces),  and  the
       variable	 is  created  in  the current namespace.  If name includes any
       namespace qualifiers, the variable is created in the  specified	names‐
       pace.  If the variable is not defined, it will be visible to the names‐
       pace which command, but not to the info exists command.

       If the variable command is executed inside a Tcl procedure, it  creates
       local  variables	 linked	 to the corresponding namespace variables (and
       therefore these variables are listed by info locals.)  In this way  the
       variable command resembles the global command, although the global com‐
       mand only links to variables in the global namespace.   If  any	values
       are  given, they are used to modify the values of the associated names‐
       pace variables.	If a namespace variable does not exist, it is  created
       and optionally initialized.

       A  name argument cannot reference an element within an array.  Instead,
       name should reference the entire array, and  the	 initialization	 value
       should  be  left	 off.	After the variable has been declared, elements
       within the array can be set using ordinary set or array commands.

SEE ALSO
       global(n), namespace(n), upvar(n)

KEYWORDS
       global, namespace, procedure, variable

Tcl				      8.0			   variable(n)

Vote for polarhome