HackerTube / Video
Ruby Manor 3 - Programming with Nothing by Tom Stuart
Confreaks
Tom Stuart's Ruby Manor 3 talk builds FizzBuzz using nothing but Ruby lambdas, working through Church encodings of numbers, booleans and data structures. It is a hands-on introduction to lambda calculus.
Strongly recommended in lambda calculus and Y-combinator threads as a mind-expanding half hour that clarifies the ideas.
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