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<p><h2>1 new question in <a href="http://stackexchange.com/filters/7853/data-table">data.table filter</a> on stackexchange.com</h2><hr/></p>
<p><div style="padding: 0 15px;"><h3><a href="http://stackoverflow.com/questions/7822138/identifying-duplicated-rows-in-a-data-table-porting-set-operations-from-data-fr">Identifying duplicated rows in a data.table - Porting set operations from data frames</a></h3>
I am porting some little helper functions to do set operations, and haven't found an easy way to find duplicated rows in a data table. It gives an error that data tables must have keys. Examples …
</div><table cellspacing="0" border="0" cellpadding="0" width="100%" style="font-size: 90%; color: #7A7A7A; padding: 15px 15px 0 15px"><tr><td align="left">Tagged: r data.frame data.table set-operations </td><td align="right"> by <a href="http://stackoverflow.com/users/805808/iterator">Iterator</a> on <a href="http://stackoverflow.com">stackoverflow.com</a></td></tr></table></p>
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