Comment by hnfong

Arguably the issue with "quicksort in Haskell" is not that it's "hard" to implement, but rather it defeats the whole purpose of using a "purely functional" language.

The pragmatic way to look at Haskell is not that it's purely functional, but rather, you could write <del>imperative code</del> Monads if you wanted, and that gives a "functional by default" environment, whereas most imperative languages default to mutable objects etc that are not friendly to functional-style programming.

But then the more modern languages are catching on with immutable by default variables etc. so in the end the differences between newer languages may not be that great after all...