<div dir="ltr">Hi all,<div><br></div><div>Is it possible to sum a tuple of monoids for example</div><div><br></div><div>sum (Just 1, Nothing)<br clear="all"><div><br></div><div>expected result Just 1</div><div><br></div><div>sum (Just 1, Just 2)</div><div><br></div><div>expected result Just 3</div><div><br></div>-- <br><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr">Best Regards,<div>Boon Hui</div></div></div>
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