Stefan O'Rear wrote:
Another possibility that occured to me recently, is to switch Integer
to a simpler (perhaps even pure-Haskell) representation, and provide
(core? extra? Hackage?) a hsgmp package. If you have big numbers,
switching is easy:
import Prelude hiding(Integer)
import Data.Integer.GMP
type Integer = MPZ
except that lots of things depend on Prelude.Integer, such as class Num
and Integral, potentially a fixed Enum, and who knows what functions
that base exports. IMO there needs to be a standard Integer type for
library APIs to use (unless making them all class-qualified like
(Integral a) => is an acceptable substitute?). This does not fit well
with different code using different Integers as they please, especially
not if we want it to be likely/possible to be fast.
Isaac
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