@xuwei_k smash that #scala variance shit Kenji https://github.com/xuwei-k/scalaz/commit/595a85521125ca556b851236348304bd675dab8d …
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@dibblego This reminds me to ask: seems like there's a relationship between subtyping variance and functor variance (co/contra/inv). True? -
@dibblego E.g., Ordering[A] has a contravariant functor and could be written as contravariant in A. - Show replies
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