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Remove Applicative instances for MonadTransformers #1109

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yilinwei opened this issue Jun 10, 2016 · 1 comment
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Remove Applicative instances for MonadTransformers #1109

yilinwei opened this issue Jun 10, 2016 · 1 comment

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@yilinwei
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See #1106.

A monad transformer should not have an Applicative which is derived from the Applicative of F, even in the cases where both are the same.

If indeed want an Applicative for F[G[_]] we should delegate to Nested.
@yilinwei
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I think it's OK when both are consistent, in the other case captured by @peterneyens comment in #1107.

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