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ianweatherhogg : gabiel   63

Haskell for all: Program imperatively using Haskell lenses
import Control.Lens

score :: Lens' Game Int
score = lens _score (\game v -> game { _score = v })
monad  haskell  lens  5*  state  game  compose  gabiel  derivation 
july 2013 by ianweatherhogg

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