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<html><head><!- Copyright (c) Go Ahead Software Inc., 1995-2000. All Rights Reserved. -><title>symOpen -- basic</title><link rel="stylesheet" href="../../../style/doc.css" type="text/css"></head><body> <table width="550"> <tr><td><table border=0 width=100% cellspacing=0 cellpadding=0 CLASS="apiTitle"><tr>	<td class="titleLeft" align=left width="33%"><b> symOpen</b></td><td class="titleCenter" align=center width="33%"><b> basic</b></td><td class="titleRight" align=right width="33%"><B> EMF</B></td></tr></table><hr><h2>Synopsis</h2><p>Creates a symbol table for fast indexing.</p><h2>Prototype</h2><pre> #include &quot;uemf.h&quot; sym_fd_t <b>symOpen</b>(int hash_size); </pre><h2>Parameters</h2><table width=100% BORDER="0" CELLPADDING="0" CELLSPACING="0">        <tr>        <td>hash_size</td><td>Table size.  Nearest prime number is actually used.</td></tr></table><h2>Description</h2><p> This module implements a highly efficient generic symbol table with update   and access routines. Symbols are simple character strings, and the values they   take can be flexible types as defined by <a href="value_t.htm">value_t</a>.   This module allows multiple symbol tables to be created. </p><p>The function allocates a table structure (sym_tabent_t) which consists ofthe table size, a flag for whether the table is in use, and the actual tableitself.  The structure is stored in a global sym array that can be accessed bythe returned sym_fd_t handle.</p><h2>Return Value</h2><p> Returns an integer (sym_fd_t) to be used as the handle for subsequent calls tothe symbol table access functions.  Returns -1 on error. </p><h2>Example</h2><pre>sym_fd_t id;sym_t* sp;id = symOpen(64);...symEnter(id, "lookup", valueString("value"), 0);...sp = symLookup(id, "lookup");</pre><h2>Stability Classification</h2><p>Evolving.</p><h2></h2><h2></h2><h2></h2><h2>See Also</h2><p><a href="symClose.htm">symClose</a>,<a href="symDelete.htm">symDelete</a>,<a href="symEnter.htm">symEnter</a>,<a href="symFirst.htm">symFirst</a>,<a href="symLookup.htm">symLookup</a>,<a href="symNext.htm">symNext</a></p></td></tr></table></body></html>

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