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| author | William Joye <wjoye@cfa.harvard.edu> | 2019-04-22 15:47:07 (GMT) |
|---|---|---|
| committer | William Joye <wjoye@cfa.harvard.edu> | 2019-04-22 15:47:07 (GMT) |
| commit | b195c291bad9f664e91ed5458ca45561c67874a5 (patch) | |
| tree | e2072eea51f523a4f4de726a92e8dcf741c14337 /tcl8.6/doc/break.n | |
| parent | 7e8909a08b8e425eeaa69085cbe86e848f2f5650 (diff) | |
| download | blt-b195c291bad9f664e91ed5458ca45561c67874a5.zip blt-b195c291bad9f664e91ed5458ca45561c67874a5.tar.gz blt-b195c291bad9f664e91ed5458ca45561c67874a5.tar.bz2 | |
backout tcl/tk 8.6.9
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: |