Untitled
| Run Settings | |
|---|---|
| Language | Swift |
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| Snippet Metadata | |
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| Owner | w3xue |
| Created | 3 years ago |
| Modified | 3 years ago |
| Visibility | Public |
class Samplepgm {
fileprivate var counter: Int = 0{
willSet(newTotal){
print("计数器: \(newTotal)")
}
didSet{
if counter > oldValue {
print("新增加数量 \(counter - oldValue)")
}
}
}
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| Full width | |
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