Using regex can help you, maybe?<br><br>----- Reply message -----<br>Da: &quot;Soumen&quot; &lt;soumen78@gmail.com&gt;<br>Data: mer, feb 17, 2010 11:40<br>Oggetto: [Boost-users] &nbsp;[program_options][1.35] validating string value<br>A: &lt;boost-users@lists.boost.org&gt;<br><br><br>Hi,<br><br>My option (say, &quot;opt1&quot;) can take any of only few possible string type values<br>(say, &quot;value1&quot;, &quot;value2&quot;, &quot;value3&quot; and &quot;value4&quot;). Is there anyway to specify<br>this such that if any other value, say - &quot;valueXX&quot;, is passed to &quot;opt1&quot;, it<br>throws an error?<br><br>If yes, can someone point me to documentation or sample code snippet to show<br>how to do this?<br><br>Or, explicitly, checking against these possible values is my only option?<br><br>Regards,<br>~ Soumen<br>-- <br>View this message in context: <a href="http://old.nabble.com/-program_options--1.35--validating-string-value-tp27621865p27621865.html">http://old.nabble.com/-program_options--1.35--validating-string-value-tp27621865p27621865.html</a><br>Sent from the Boost - Users mailing list archive at Nabble.com.<br><br>_______________________________________________<br>Boost-users mailing list<br>Boost-users@lists.boost.org<br><a href="http://lists.boost.org/mailman/listinfo.cgi/boost-users">http://lists.boost.org/mailman/listinfo.cgi/boost-users</a><br><br><br>