27 lines
1.6 KiB
HTML
27 lines
1.6 KiB
HTML
<HTML><HEAD><TITLE>Built-In Commands - break manual page</TITLE></HEAD><BODY>
|
|
<H3><A NAME="M2">NAME</A></H3>
|
|
break - Abort looping command
|
|
<H3><A NAME="M3">SYNOPSIS</A></H3>
|
|
<B>break</B><BR>
|
|
<H3><A NAME="M4">DESCRIPTION</A></H3>
|
|
This command is typically invoked inside the body of a looping command
|
|
such as <B><A HREF="../TkCmd/for.htm">for</A></B> or <B><A HREF="../TkCmd/foreach.htm">foreach</A></B> or <B><A HREF="../TkCmd/while.htm">while</A></B>.
|
|
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 <B><A HREF="../TkCmd/catch.htm">catch</A></B> command, Tk event bindings, and the outermost
|
|
scripts of procedure bodies.
|
|
|
|
<H3><A NAME="M5">SEE ALSO</A></H3>
|
|
<B><A HREF="../TkCmd/catch.htm">catch</A></B>, <B><A HREF="../TkCmd/continue.htm">continue</A></B>, <B><A HREF="../TkCmd/for.htm">for</A></B>, <B><A HREF="../TkCmd/foreach.htm">foreach</A></B>, <B><A HREF="../TkCmd/while.htm">while</A></B>
|
|
<H3><A NAME="M6">KEYWORDS</A></H3>
|
|
<A href="../Keywords/A.htm#abort">abort</A>, <A href="../Keywords/B.htm#break">break</A>, <A href="../Keywords/L.htm#loop">loop</A>
|
|
<HR><PRE>
|
|
<A HREF="../copyright.htm">Copyright</A> © 1993-1994 The Regents of the University of California.
|
|
<A HREF="../copyright.htm">Copyright</A> © 1994-1996 Sun Microsystems, Inc.
|
|
<A HREF="../copyright.htm">Copyright</A> © 1995-1997 Roger E. Critchlow Jr.</PRE>
|
|
</BODY></HTML>
|