Invisible wrote:
> - I have no idea what Erlang does...

You send a message to another process, or receive such a message, which 
isn't therefore functional as such. Processing the message is (mostly) 
functional, but the behavior of a collection of processes varies with 
timing and such.

Plus, there are processes implemented in C which do non-functional stuff 
with messages, like write them to stdout.

> (A Haskell "program" takes an infinite list of I/O responses as input, and returns
an infinite list of I/O requests as output.

I remember reading about that a long time ago! :-)

-- 
Darren New / San Diego, CA, USA (PST)

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