A friend of mine asked me if I understood the Y function. I didn't even know what it was. ? Y did not get me anywhere.
What is it?
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A:
Most common application: it enables an anonymous function to call itself recursively.
An excellent explanation can be found on Mike Vanier's livejournal page
sblom
2009-02-27 22:56:38
Errr, the Y function? Sounds more like the Y combinator!
leppie
2009-02-27 22:59:24
Combinators are just functions that don't contain any free variables.
Peter S. Housel
2009-02-27 23:19:44