Daniel Fischer wrote:
If it's called often, and the arrays are 0-based and Int-indexed,
import Data.Array.Base (unsafeAt)
and replacing ! with `unsafeAt` should give a speed-up, though probably not
terribly much. If you don't need the polymorphism and your array elements
are unboxable, using UArray from Data.Array.Unboxed should be significantly
faster.
Beware that unboxed arrays are strict, and changing the strictness
properties of your code can have non-obvious consequences...
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