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ActiveTcl User Guide |
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break - Abort looping command
break
This command is typically invoked inside the body of a looping
command such as for or foreach or while. It returns a TCL_BREAK
code, which causes a break exception to occur. The exception causes
the current script to be aborted out to the innermost containing
loop command, which then aborts its execution and returns normally.
Break exceptions are also handled in a few other situations, such
as the catch command, Tk
event bindings, and the outermost scripts of procedure bodies.
Print a line for each of the integers from 0 to 5:
for {set x 0} {$x<10} {incr x} {
if {$x > 5} {
break
}
puts "x is $x"
}
catch, continue, for, foreach, return, while
abort, break, loop
Copyright © 1993-1994 The Regents of the University of California.
Copyright © 1994-1996 Sun Microsystems, Inc.
Copyright © 1995-1997 Roger E. Critchlow Jr.