Hey everyone, Is there any difference between defi...
# getting-startede
efemoney
09/05/2017, 7:15 AMHey everyone, Is there any difference between defining the extention function on the concrete base class as opposed to defining it on a generic subclass ? Semantically, to me, they dont look any different
fun Context.dpToPx(dp: Int) = ...fun <T: Context> T.dpToPx(dp: Int) = ...v
voddan
09/05/2017, 8:45 AMSince extension extend types, not necessarily classes, those two cases are indeed the same, even on the bytecode level
voddan
09/05/2017, 8:45 AMBe aware of the variance thou: http://kotlinlang.org/docs/reference/generics.html#variance
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efemoney
09/05/2017, 9:50 AMYeah thanks.
r
Ruckus
09/05/2017, 1:47 PMIf you plan on returning the receiver, or if the function takes a function type as an argument, the latter is usually more useful. Otherwise there's no difference.
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