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<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>
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<h2>Synopsis</h2><p>Creates a symbol table for fast indexing.</p><h2>Prototype</h2><pre>
#include "uemf.h"
sym_fd_t <b>symOpen</b>(int hash_size);
</pre><h2>Parameters</h2><table width=100% BORDER="0" CELLPADDING="0" CELLSPACING="0">
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<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 of
the table size, a flag for whether the table is in use, and the actual table
itself. The structure is stored in a global sym array that can be accessed by
the 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 to
the 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>
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