The shuffle function is not pure functional, it's stateful by definition and by design.
Two calls to shuffle(x) with the same parameter x may by design return different results, so it's not referentially transparent.
I'm not sure what I was thinking here. It's useful but flies in the face of the principles of this library.
It would be possible to take a PRNG state as an argument to regain referential transparency but I'm not sure I really want to do that here.
The shuffle function is not pure functional, it's stateful by definition and by design.
Two calls to
shuffle(x)with the same parameterxmay by design return different results, so it's not referentially transparent.I'm not sure what I was thinking here. It's useful but flies in the face of the principles of this library.
It would be possible to take a PRNG state as an argument to regain referential transparency but I'm not sure I really want to do that here.