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  • Y Combinator in Haskell - Stack Overflow
    The Y combinator can't be typed using Hindley-Milner types, the polymorphic lambda calculus on which Haskell's type system is based You can prove this by appeal to the rules of the type system I don't know if it's possible to type the Y combinator by giving it a higher-rank type It would surprise me, but I don't have a proof that it's not
  • How Can Lisp be defined in terms of y combinator? - Stack Overflow
    The y combinator uses lexical closures to perform recursion Thus you can implement a Scheme interpreter with global variables and letrec in a host scheme that doesn't have them as long as it has lexical closures
  • Two-layer Y-style combinator. Is this common? Does this have an . . .
    Y combinator in lambda calculus only emulates recursion True recursion is true self-reference; not receiving copies equal to self, through self-application (however smart that is)
  • lisp - Y combinator in elisp - Stack Overflow
    Y: f -> ( (x -> f(y -> x x y)) (x -> f(y -> x x y)) ) And you should see that this is the same as the working one Thus, in a pure math lambda-calculus world, your definition and the working one are the same This leads to the conclusion that yours didn't work because Lisp doesn't live in a pure math lambda-calculus world
  • y-combinator in javascript - Stack Overflow
    y-combinator in javascript Ask Question Asked 8 years, 10 months ago Modified 7 years, 11 months ago
  • How can I implement Y-Combinator with FnMut in Rust?
    In that case the Y combinator is a way to solve that, but I'd recommend to go for the alternative approaches that you're already aware of The Y combinator is impractical in most languages without lazy evaluation, and especially so in Rust, where it also runs afoul of the ownership model





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