Fixed-point combinators are useful for memoizing or otherwise modifying recursive functions: http://matt.might.net/articles/implementation-of-recursive-fixed-po

Fixed-point combinators are useful for memoizing or otherwise modifying recursive functions: http://matt.might.net/articles/implementation-of-recursive-fixed-point-y-combinator-in-javascript-for-memoization/ http://matt.might.net/articles/implementation-of-recursive-f...