Andrew Coppin wrote:
Program with no particular optimisations: 0.35 seconds.
Program with stream fusion [and GHC HEAD]: 0.25 seconds.
Program with stream fusion and ByteString: 0.05 seconds.
Surely you'd have to work pretty hard to get that kind of speed even
in C. ;-)
...erm, actually no. Somebody sat down and wrote something in five
minutes that takes 0.005 seconds. Oops!
You may also be paying a fixed cost penalty in GHC run-time
initialization. Try increasing N and see what happens.
Paul.
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