filter ((<=0.5) . abs) xs


On Mon, Oct 19, 2009 at 10:49 AM, Michael Mossey <mpm@alumni.caltech.edu> wrote:
Is there a nifty way to write

filter (\x -> x < 0.5 && x > -0.5) xs

without explicitly using x?

Maybe arrows? I have a vague understanding that arrows can "send" an argument to more than one computation.

-Mike
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