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I.e. look at how PureScript does it [0]. Haskell could do the same. [0] https://pursuit.purescript.org/packages/purescript-arrays/3.0.1/docs/Data.Array#v:index
by pka 10y ago
I.e. look at how PureScript does it [0]. Haskell could do the same.
[0] https://pursuit.purescript.org/packages/purescript-arrays/3.0.1/docs/Data.Array#v:index https://pursuit.purescript.org/packages/purescript-arrays/3....
- jstimpfle 10y agoSure, I can use a Maybe variant, but the consequence would be that I wrap the whole program in a layer of maybes for cases that I "know" shouldn't happen but happened -- because I do make mistakes. Or in other words, an "AssertionMonad". No thanks, I'm perfectly fine with assertion errors (i.e. "Index out of bounds"). I just need help with finding my own errors. Stacktraces are a good thing.
- pka 10y agoI agree, stack traces are a good thing. For the time being, make a helper function: ixWithString :: String -> Int -> Array a -> a check the bounds inside and error out with a custom message when the index is outside the array bounds.