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In Swift, it’s not possible to know if T is Printable or am I missing something? “Cannot downcast from T to non-

@objc

protocol Printable”

Correct.

know limitation? or shouldn’t I be doing what I’m trying to do?

Suggest using function overloading to accomplish your goals.

this is what I’m trying to do: gist.github.com/JaviSoto/9d112

Ah, hm. Don't see any good way to achieve this.

function overloading with a more specific type will work though! This is what you mean? gist.github.com/JaviSoto/9d112

I commented before you posted the gist l, but yeah. Curious to see if that works.

it doesn’t, but I can’t see why it wouldn’t..

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Remember that generic impls are constructed at compile time. It'd have to be smart enough to emit multiple impls of debugDesc here

6:22 AM · Dec 31, 2014Twitter for Mac

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oh, I see what you’re saying. At the very least this should emit a warning though.

for _this_ exact problem, you *could* use toDebugString (I think it's called) if you really want...

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