📄 symlookup.htm
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<title>symLookup -- basic</title>
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<td class=title-left><b> symLookup</b></td>
<td class=title-center><b> basic</b></td>
<td class=title-right><B> EMF</B></td>
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<h2>Synopsis</h2>
<p>Finds a value from a symbol table given the lookup key</p>
<h2>Prototype</h2>
<pre>
sym_t *<b>symLookup</b>(sym_fd_t sd, char_t* aname);
</pre>
<h2>Parameters</h2>
<p>
<table width=90%>
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<td width=40>sd</td>
<td>Handle to the table created from a previous call to symOpen</td>
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<td width=40>aname</td>
<td>The string lookup key that was set by <a href="symEnter.htm">
symEnter</a></td>
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<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 value_t.
This module allows multiple symbol tables to be created.
</p>
<h2>Return Value</h2>
<p>
Returns a pointer to a sym_t structure which contains the value.
NULL if not found.
</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>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="symNext.htm">symNext</a>,
<a href="symOpen.htm">symOpen</a>
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