{"name":"gist: 877342","desc":"Fibonacci implementation using a memoizing y-combinator.","actor":"cushon","url":"https://gist.github.com/877342","snippet":"(define Y\n  (λ (f) \n    (define t (make-hash))","actor_gravatar":"ffdbbf47b6fa9b237c1e2bc424fff243","action":"update"}