<div dir="auto"><div>MonoFoldable isn't the answer either. That also has the problem of requiring the same constraint for folding as for membership tests.<br><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Jan 30, 2022, 12:12 AM PHO <<a href="mailto:pho@cielonegro.org" target="_blank" rel="noreferrer">pho@cielonegro.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">On 1/30/22 9:59 AM, David Feuer wrote:<br>
[snip]<br>
> . I think the real answer is to remove `elem` from `Foldable` and put<br>
> it somewhere more appropriate.<br>
<br>
In a separate class? That would only help `elem` but not any other <br>
methods of Foldable. I'd rather love to see MonoFoldable[1] to be moved <br>
to base then.<br>
<br>
[1]: <br>
<a href="https://hackage.haskell.org/package/mono-traversable-1.0.15.3/docs/Data-MonoTraversable.html#t:MonoFoldable" rel="noreferrer noreferrer noreferrer" target="_blank">https://hackage.haskell.org/package/mono-traversable-1.0.15.3/docs/Data-MonoTraversable.html#t:MonoFoldable</a><br>
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</blockquote></div></div></div>