On 12/01/2012 01:31 PM, Christopher Howard wrote:
Can application of an expression (to a function) be treated like a function itself? In my specific case, I started with this expression:
code: -------- (cos b * velocityC, sin b * velocityC) --------
But I have a compulsive hatred of duplication. I happened to have this function handy called appPair:
code: ------- appPair f (a, b) = (f a, f b)
appPair (* velocityC) (cos b, sin b) -------
Better, but the b identifier is still duplicated. Is there some way I could have...
code: -------- appPair (?) (cos, sin) --------
...shifting the application of b into the (* velocityC) expression, without modifying my appPair function?
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Wait, think I got it... code: -------- appPair (\x -> (x $ b) * velocityC) (cos, sin) -------- -- frigidcode.com