Haskell is extremely extensible. In beginner tutorials, it's normal to implement subsets of other languages (Perl, Javascript, Lisp) as exercises. Often, the ga

Haskell is extremely extensible. In beginner tutorials, it's normal to implement subsets of other languages (Perl, Javascript, Lisp) as exercises. Often, the game seems to be making a domain-specific language uniquely suited to the problem you're working on.