<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>incr0</title><link rel="stylesheet" type="text/css" href="rivet.css"><meta name="generator" content="DocBook XSL Stylesheets V1.76.1"><link rel="home" href="index.html" title="Apache Rivet"><link rel="up" href="commands.html" title="Rivet Tcl Commands and Variables"><link rel="prev" href="include.html" title="include"><link rel="next" href="lassign.html" title="lassign"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">incr0</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="include.html"><img src="images/prev.png" alt="Prev"></a> </td><th width="60%" align="center">Rivet Tcl Commands and Variables</th><td width="20%" align="right"> <a accesskey="n" href="lassign.html"><img src="images/next.png" alt="Next"></a></td></tr></table></div><div class="refentry" title="incr0"><div class="refentry.separator"><hr></div><a name="incr0"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>incr0 — increment a variable or set it to 1 if nonexistant.</p></div><div class="refsynopsisdiv" title="Synopsis"><h2>Synopsis</h2><div class="cmdsynopsis" style="width:80%"><div style="background:#ccccff ; margin:1ex ; padding:.4ex; padding-left: 0.8ex;   word-spacing:1ex "><span style="font-weight:bold ; font-family:monospace">incr0</span>  ?<span style="font-family:monospace; font-weight: bold;"><em class="replaceable"><code>varname</code></em></span>? ?<span style="font-family:monospace; font-weight: bold;"><em class="replaceable"><code>num</code></em></span>?</div></div></div><div class="refsect1" title="Description"><a name="idp5435472"></a><h2>Description</h2><p style="width:90%">
          Increment a variable
          <em class="replaceable"><code>varname</code></em> by
          <em class="replaceable"><code>num</code></em>.  If the
          variable doesn't exist, create it instead of returning an
          error.
        </p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="include.html"><img src="images/prev.png" alt="Prev"></a> </td><td width="20%" align="center"><a accesskey="u" href="commands.html"><img src="images/up.png" alt="Up"></a></td><td width="40%" align="right"> <a accesskey="n" href="lassign.html"><img src="images/next.png" alt="Next"></a></td></tr><tr><td width="40%" align="left" valign="top">include </td><td width="20%" align="center"><a accesskey="h" href="index.html"><img src="images/home.png" alt="Home"></a></td><td width="40%" align="right" valign="top"> lassign</td></tr></table></div></body></html>