A good source of inspiration: Ruby's Enumerable[1] and Scala's Iterable[2]. Toguether, they have one of the most complete functional collection methods library.

A good source of inspiration: Ruby's Enumerable[1] and Scala's Iterable[2]. Toguether, they have one of the most complete functional collection methods library. [1] http://ruby-doc.org/core-1.9.3/Enumerable.html http://ruby-doc.org/core-1.9.3/Enumerable.html [2] http://www.scala-lang.org/api/current/scala/collection/immutable/Iterable.html http://www.scala-lang.org/api/current/scala/collection/immut...