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<head><title>nextkey -- the next key in a database</title>
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<div><h1>nextkey -- the next key in a database</h1>
<div class="single"><h2>Description</h2>
<div><tt>nextkey f</tt> -- return the next key available in the database file <tt>f</tt>.<p/>
Returns <a href="_null.html" title="the unique member of the empty class">null</a> if none.<p/>
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<div class="single"><h2>See also</h2>
<ul><li><span><a href="___Database.html" title="the class of all database files">Database</a> -- the class of all database files</span></li>
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