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| author | William Joye <wjoye@cfa.harvard.edu> | 2016-12-21 22:56:22 (GMT) |
|---|---|---|
| committer | William Joye <wjoye@cfa.harvard.edu> | 2016-12-21 22:56:22 (GMT) |
| commit | d1a6de55efc90f190dee42ab8c4fa9070834e77d (patch) | |
| tree | ec633f5608ef498bee52a5f42c12c49493ec8bf8 /tcl8.6/doc/break.n | |
| parent | 5514e37335c012cc70f5b9aee3cedfe3d57f583f (diff) | |
| parent | 98acd3f494b28ddd8c345a2bb9311e41e2d56ddd (diff) | |
| download | blt-d1a6de55efc90f190dee42ab8c4fa9070834e77d.zip blt-d1a6de55efc90f190dee42ab8c4fa9070834e77d.tar.gz blt-d1a6de55efc90f190dee42ab8c4fa9070834e77d.tar.bz2 | |
Merge commit '98acd3f494b28ddd8c345a2bb9311e41e2d56ddd' as 'tcl8.6'
Diffstat (limited to 'tcl8.6/doc/break.n')
| -rw-r--r-- | tcl8.6/doc/break.n | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/tcl8.6/doc/break.n b/tcl8.6/doc/break.n new file mode 100644 index 0000000..3e4ce5f --- /dev/null +++ b/tcl8.6/doc/break.n @@ -0,0 +1,47 @@ +'\" +'\" Copyright (c) 1993-1994 The Regents of the University of California. +'\" Copyright (c) 1994-1996 Sun Microsystems, Inc. +'\" +'\" See the file "license.terms" for information on usage and redistribution +'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES. +'\" +.TH break n "" Tcl "Tcl Built-In Commands" +.so man.macros +.BS +'\" Note: do not modify the .SH NAME line immediately below! +.SH NAME +break \- Abort looping command +.SH SYNOPSIS +\fBbreak\fR +.BE +.SH DESCRIPTION +.PP +This command is typically invoked inside the body of a looping command +such as \fBfor\fR or \fBforeach\fR or \fBwhile\fR. +It returns a 3 (\fBTCL_BREAK\fR) result 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 \fBcatch\fR command, Tk event bindings, and the outermost +scripts of procedure bodies. +.SH EXAMPLE +.PP +Print a line for each of the integers from 0 to 5: +.PP +.CS +for {set x 0} {$x<10} {incr x} { + if {$x > 5} { + \fBbreak\fR + } + puts "x is $x" +} +.CE +.SH "SEE ALSO" +catch(n), continue(n), for(n), foreach(n), return(n), while(n) +.SH KEYWORDS +abort, break, loop +'\" Local Variables: +'\" mode: nroff +'\" End: |