git.iko.soy/ormolu
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ormolu/data/examples/declaration/value/function/arrow/proc-lambdas.hs
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1{-# LANGUAGE Arrows #-}
3foo = proc a-> \f b->a-<f b -- Foo
5bar =
6 proc x ->
7 \f g h ->
8 \() ->
9 \( Left (x,y )) -> -- Tuple value
10 f (g (h x)) -< y