The setter deduplicates by equality: if the new value == the current value, no notification fires. This works well for enums, strings, and ints, but mutating a mutable object in place and reassigning the same reference won't trigger consumers (because obj == obj is trivially True). Stick to immutable values and this isn't a concern.
「我們知道如果不在他們發動攻擊前先下手，我們將承受更大的傷亡,」盧比奧在國會山莊對記者說。
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Colors: Space black and silver
vivo X300 Ultra 实拍样片公布