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Haskell High Performance Programming
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Like all general-purpose programming languages, Haskell too has a few different number types. Unlike other languages, the number types in Haskell are organized into a hierarchy via type classes. This gives us two things:
An example of an insane thing would be dividing an integer by another integer, expecting an integer as a result. And because every integral type is an instance of the Integral
class, we can easily write a factorial
function that doesn't care what the underlying type is (as long as it represents an integer):
factorial :: Integral a => a -> a factorial n = product [1..n]
The following table lists basic numeric types in Haskell:
Type |
Size |
---|---|
|
Signed integers, machine-dependent |
|
Unsigned integers, machine-dependent |
|
Double-precision floating point, machine-dependent |
|