@japgolly @headinthebox @jnfrd @thomasdietert The Foldable instance for ((,) t) very clearly says what it does in this very sentence.
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Replying to @dibblego
@dibblego@headinthebox@jnfrd @thomasdietert My ghci foo is too shit to get that defn. Is there a :t like command I can use?1 reply 0 retweets 0 likes -
Replying to @japgolly
@japgolly@headinthebox@jnfrd @thomasdietert :info (,)1 reply 0 retweets 1 like -
Replying to @dibblego
@dibblego@japgolly@headinthebox @thomasdietert '... instance Foldable ((,) a)' and where does it say the a is at the snd position?1 reply 0 retweets 0 likes -
Replying to @jnfrd
@jnfrd@japgolly@headinthebox @thomasdietert It doesn't. It is in the first position. Also, type constructors always take one argument.2 replies 0 retweets 0 likes -
Replying to @dibblego
@dibblego@japgolly@headinthebox @thomasdietert I think I got it, though I still don't understand why there is a foldable for ()1 reply 0 retweets 0 likes -
Replying to @jnfrd
@jnfrd@japgolly@headinthebox @thomasdietert There isn't. There is Foldable for ((,) t). There is Bifoldable for (,).1 reply 0 retweets 0 likes -
Replying to @dibblego
@dibblego@japgolly@headinthebox @thomasdietert yes, typo. see my snd tweet please.1 reply 0 retweets 0 likes -
Replying to @jnfrd
@jnfrd@japgolly@headinthebox @thomasdietert I was addressing that one. https://i.imgur.com/UVGYMwt.png (There isn't…)1 reply 0 retweets 0 likes -
Replying to @dibblego
@dibblego@japgolly@headinthebox @thomasdietert Ok got it, but what is the motivation for that instance?1 reply 0 retweets 0 likes
@jnfrd @japgolly @headinthebox @thomasdietert |programs that utilise it| > 0. Instances are not particularly motivated, type-classes are.
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