<div dir="ltr"><div class="gmail_default" style="font-family:georgia,serif;font-size:small">Hi All,</div><div class="gmail_default" style="font-family:georgia,serif;font-size:small"><br></div><div class="gmail_default" style="font-family:georgia,serif;font-size:small">I'm implementing a puzzle where the input is given as a matrix, using Data.Matrix package in Haskell.</div><div class="gmail_default" style="font-family:georgia,serif;font-size:small"><br></div><div class="gmail_default" style="font-family:georgia,serif;font-size:small">How do I implement similar functions to `union`, which are available for lists on a matrix? </div><div><br></div><div><br></div>-- <br><div class="gmail_signature"><div dir="ltr"><div><div><div><font face="georgia,serif">Regards, <br>Dananji Liyanage</font></div></div></div></div></div>
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