Re: Proposal: Add a strict version of foldlWithKey to Data.Map

22 Aug 2010


      On Mon, Aug 23, 2010 at 12:33 AM, Ian Lynagh  wrote:
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On Mon, Aug 23, 2010 at 12:23:52AM +0200, Johan Tibell wrote:
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On Sun, Aug 22, 2010 at 2:47 PM, Ian Lynagh  wrote:
...
Well, if there's a GHC code performance bug then we should fix it, but
I
don't think we should use a workaround in the libraries that gives a
function the wrong strictness.
The generated core has the strictness we want
In your example, yes, but if f ignores its first argument then it
doesn't.
That's a good point. Do you have an alternate definition in mind that would
work better?

-- Johan