+1 <div><br></div><div><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div class="im">> I'd prefer to not wait with adding popCount until this is done, unless<br>
> someone takes it on them to add the others before GHC 7.4.<br>
<br>
</div>No, don't wait. While it would be nice to have the others equally soon,<br>
it's better to have one goody than none.<br></blockquote><div><br></div><div>How about making the API change in one go -- i.e. add the default implementations for all of them, which is easy. Then people can come along and do the GHC work necessary to make the others efficient later. </div>
<div><br></div><div>In fact, changing the API could be a "forcing function" to make the others happen ;-).</div><div><br></div><div> -Ryan</div><div><br></div></div></div>