Haskell

Haskell is a functional programming (FP) language. Haskell is a very "pure" language, being lazy and free of side-effects, however input-output (IO) and other changes to the outside world can be made -- through Monads.
The Haskell-98 subset was standardised c1998, but most compilers and interpreters offer experimental extensions.
"The Haskell 2010 report was published in July 2010" -- [H2010].
 
[Programming Examples].
 
 
The Haskell community is active:
 
[haskell.org] c2003, 2016, ...
[definition] Haskell and libraries, H98 Revised [Report], [Developer_Wiki]
 
ghc latest ...
[documentation / libraries]
also try .../ghc/ for old versions