<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">On Mon, Feb 3, 2014 at 5:51 PM, Dan Burton <span dir="ltr"><<a href="mailto:danburton.email@gmail.com" target="_blank">danburton.email@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div>Indeed this issue is not limited merely to multiple failure values.</div><div><br></div><div>Â Â >>> runMaybeT $ lift (putStrLn "effect") >> mzero</div>
<div>Â Â effect</div><div>
  >>> runMaybeT mzero</div><div><br></div><div>So you're right. This law is being violated </div></div></blockquote><div><br></div><div>I thought it was fairly well known that IO violates one of the monad laws, in a way that would lead to this?</div>
<div><br></div></div>-- <br><div dir="ltr"><div>brandon s allbery kf8nh                sine nomine associates</div><div><a href="mailto:allbery.b@gmail.com" target="_blank">allbery.b@gmail.com</a>                  <a href="mailto:ballbery@sinenomine.net" target="_blank">ballbery@sinenomine.net</a></div>
<div>unix, openafs, kerberos, infrastructure, xmonad     <a href="http://sinenomine.net" target="_blank">http://sinenomine.net</a></div></div>
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