16 Aug
2007
16 Aug
'07
8:43 p.m.
Someone mentioned the "Blow your mind" page. One example there really caught my attention. "1234567" => ("1357","246") foldr (\a ~(x,y) -> (a:y,x)) ([],[]) I've known about lazy match since an early version of the Haskell report, but have never actually used it. Last night, looking at that example, the lights went on and I finally grokked why it's there and understood when/why I might use it myself. Oh, I knew perfectly well what it does. It just never made itself at home in my head. I'd like to recommend this example for some sort of prize, therefore.