On Jun 22, 2007, at 12:34 PM, Dave Bayer wrote:
In particular, I always want defaulting errors, because sometimes I
miss the fact that numbers I can count on my fingers are defaulting
to Integer.
So no one took the bait to actually offer me a shorter idiom, but I
thought about the above sentence, and had a big Homer Simpson "Doh!"
revelation. In the acual code I was cleaning up, just write out the
exponentiations, for example,
evalBezier :: R -> Bezier -> [R]
evalBezier t b = let s = 1-t in case b of
Line x y -> s*.x .+. t*.y
Cubic w x y z -> s*s*s*.w .+. 3*s*s*t*.x .+. 3*s*t*t*.y .+.
t*t*t*.z
To my taste, that's much prettier than half a dozen lines of
declarations to get ^ to behave with ghc -Wall -Werror, and after all
I'm just hand-unrolling the code for ^.
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