debian man page for global

Query: global

OS: debian

Section: 3tcl

Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar

global(3tcl)						       Tcl Built-In Commands						      global(3tcl)

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NAME
global - Access global variables
SYNOPSIS
global varname ?varname ...? _________________________________________________________________
DESCRIPTION
This command has no effect unless executed in the context of a proc body. If the global command is executed in the context of a proc body, it creates local variables linked to the corresponding global variables (though these linked variables, like those created by upvar, are not included in the list returned by info locals). If varname contains namespace qualifiers, the local variable's name is the unqualified name of the global variable, as determined by the namespace tail command. varname is always treated as the name of a variable, not an array element. An error is returned if the name looks like an array element, such as a(b).
EXAMPLES
This procedure sets the namespace variable ::a::x proc reset {} { global a::x set x 0 } This procedure accumulates the strings passed to it in a global buffer, separated by newlines. It is useful for situations when you want to build a message piece-by-piece (as if with puts) but send that full message in a single piece (e.g. over a connection opened with socket or as part of a counted HTTP response). proc accum {string} { global accumulator append accumulator $string }
SEE ALSO
namespace(3tcl), upvar(3tcl), variable(3tcl)
KEYWORDS
global, namespace, procedure, variable Tcl global(3tcl)
Related Man Pages
variable(n) - redhat
set(3tcl) - debian
upvar(3tcl) - debian
global(n) - suse
global(1) - suse
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