Smalltalk has a lot of similarity with functional programming. Smalltalk's True and False instances are basically Church Booleans, and Smalltalk collections wer

Smalltalk has a lot of similarity with functional programming. Smalltalk's True and False instances are basically Church Booleans, and Smalltalk collections were processed frequently by passing a Block (like a first class function). I joke that if Smalltalk were invented today, it would be called a "functional/object hybrid language for creating Internal DSLs"