Hardest Programming Language

I've been learning assembly, and it's difficult but still very logical. This had me a thought:

What is the hardest programming language?

It is probably an esocetric language like Brainfuck, or Whitespace, but if you have any other ideas please do comment.

I code in binary, so nothing else compares. :-) j/k

I'd say Assembly would be pretty challenging.

Malbolge is a pretty hard language I heard from other people

For me the kali linux, i dont know use but i utilice windows

Varies. Lots of esoterics will be the 'hardest' just because they often aren't quite turing-complete or documented properly, or just have really odd rulesets that you need to follow.

But I'd pitch in for functional languages, like Elixir, Haskell, Erlang and F#. But that's mainly because functional paradigms are much harder to grasp than OO or procedural paradigms. But once you get it, god-damn, you're a fucking good programmer.