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B extends A.
How to cast?
I tried myVectB as Vector.<A>. But got null.
override protected function getItems():Vector.<JBuyable>
{
return player.bonus as Vector.<JBuyable>; // null;
}
A banana is-a fruit. But a list of bananas is-not a list of fruit. Otherwise you could take your list of bananas, cast it to a list of fruit, and then add an apple.