The impossible in FP languages

a sleep() function.

FP languages can't do syscalls? I don't know, but if it's true... ugh

It's not true.

>>1
This is unneccessary in FPLs. Runtime is irrelevant.

>>1
In almost all dialects of LISP and Scheme:

(sleep n)

In Erlang (courtesy of Tom Armstrong, the language's creator):

timer(Time, Fun) ->
        receive
                cancel ->
                        void
         after Time ->
                        Fun()
         end.

And so it goes...

I'll add to the list of impossible tasks for FP languages: being understood by you.

Lisp, Scheme and Erlang are not FP languages.

Scheme and Erlang aren't functional languages?

How do I troll'd?

setTimeout()

>>7
I can tell by the presence of set! and having seen quite a few functional languages in my time.

Erlang is a functional language plus very straightforward non-FP IO to make it useful.

C is a functional language plus very straightforward non-FP IO to make it useful.

C is an imperative language plus very brittle IO to make it headache inducing.

sleep = threadDelay . round . (* 10^6)

It's not impossible, it just breaks all the rules

This thread delivers

Pure FP languages are mostly useless. That's why you have mixed FP languages where you can get things done. Choose your flavour and percent of FP purity from Erlang, Scheme, Common Lisp, Ruby, Python, Lua, and who knows what else.

sleep() is not impossible, just nonsensical. You insist on counting only pure FP (and applied purely, so Haskell + IO() monad is also non-FP by your standards) languages as FP, which by definition makes them not have runtime, and then say "hah, but you can't sleep(), never mind it's inherently specific to runtime! I rawk!".

It's like making a coffee machine that works by synthesising coffee from individual atoms, and then saying that it has one disadvantage, namely that you can't remove lime from it. What you just found is flaw in your reasoning, not flaw in the system.

About it I would   call it functional.

Done with macros in?

Don't change these.

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