Is there *any* valid excuse for Dart's decision to be unsound around variance?
@mraleph That makes no sense to me. If you have types you should have casts…
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@pcwalton once again: you try to perceive Dart as a statically typed language, which it is not. It's like Smalltalk not like Java. -
@mraleph That isn't an excuse to have the types not mean what they say. - 7 more replies
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@pcwalton type annotations are just a readable way to write assert(x == null || x is T)Thanks. Twitter will use this to make your timeline better. UndoUndo
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