Single letter type variables are mostly a bad idea, except when they have no semantic meaning. Monoid[A] is ok. StateChange[A, B] is not, I prefer StateChange[Before, After]. Now let's watch as my follower count suddenly starts dropping...
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So, I'm torn on this. I do exactly that most of the time, but that's out of guilt. I really want to write `Either[Left, Right]` but can't work up the courage to do so...
Maybe the reason you're torn is that "left" and "right" look like they have semantic significance, but it's just a decoy. There's almost certainly nothing sinister about anyone's choice for the first type parameter, and you could happily swap them.
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That pun left me speechless
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It wasn't really intended to be a pun... So I hope using it in a tweet didn't make me look gauche.
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The problem is that I could swap them. Nothing tells me that the first type parameter goes on the left. Calling it Left makes it clear (or fiendishly wrong, if you mislabel them out of pure spite)
Thanks. Twitter will use this to make your timeline better. UndoUndo
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