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view could be implemented in terms of MonadAsk #79

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parsonsmatt opened this issue Dec 16, 2017 · 0 comments
Open

view could be implemented in terms of MonadAsk #79

parsonsmatt opened this issue Dec 16, 2017 · 0 comments

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@parsonsmatt
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Generalizing view is nice, as it allows you to use view in a MonadAsk context like use in a MonadState context.

-- | View the focus of a `Getter`.
view :: forall s t a b m. MonadAsk s m => Getter s t a b -> m a
view l = ask >>= unwrap (l (Forget id))
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@parsonsmatt