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| #lang racket | |
| ;;; a definition of Y(notice: it's not Y Combinator), | |
| ;;; which can run in a strict language | |
| ; (Y f) = (f (Y f)) = (f (lambda (x) ((Y f) x))) | |
| (define Y | |
| (lambda (f) | |
| (f (lambda (x) ((Y f) x))))) | |
| (define almost-factorial |
nanne007
/ repeat_until.scala
Last active
December 28, 2015 07:09
repeat { command } until(condition) syntax in scala
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| def repeat(c: => Unit) = new { | |
| def until(p: => Boolean): Unit = { | |
| c | |
| if(p) () | |
| else until(p) | |
| } | |
| } |
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| class Class | |
| def to_proc | |
| proc { |x, y| new x, y } | |
| end | |
| end | |
| p [[1, 'a'], [2, 'b'], [3, 'c']].map &Array |
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