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newtype derive Lazy instance #13

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Merged
merged 1 commit into from
Mar 23, 2017
Merged

newtype derive Lazy instance #13

merged 1 commit into from
Mar 23, 2017

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matthewleon
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@matthewleon
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Not sure if there is a reason this wasn't in there. I suspect just an oversight? I'm quite possibly mistaken, but some monad transformers I've been working would benefit from this.

@matthewleon
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Here is the sig of the function in question. Without this change, the basic monad (transformer applied to Identity) won't work:

genLazyList :: forall s m a. (Monad m, Z.Lazy (m (L.List a))) => GenT s m a -> GenT s m (L.List a)

@paf31
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paf31 commented Mar 23, 2017

LGTM

@garyb
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garyb commented Mar 23, 2017

👍

@garyb garyb merged commit 17aced5 into purescript:master Mar 23, 2017
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@matthewleon @paf31 @garyb