Obviously by incorporating many pieces from various dialects without proper, careful unification in naming, ordering of arguments, eliminating redundancy, etc.

Obviously by incorporating many pieces from various dialects without proper, careful unification in naming, ordering of arguments, eliminating redundancy, etc. The examples of good care taken are library/base of Haskell (they really do rewrite core libraries when they have implemented a better idiom) and stdlib of Erlang and Racket.