Surprised that no one mentioned what a headache arrays are in Haskell. First, there are several different libraries: Data.Array, Data.Vector, Repa, etc. Second,

Surprised that no one mentioned what a headache arrays are in Haskell. First, there are several different libraries: Data.Array, Data.Vector, Repa, etc. Second, the syntax is very clunky, especially if you are using multidimensional arrays. It's a real shame, since most machine learning/scientific computing programs are very heavy on arrays.