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Safe call оператор, Elvis оператор та ‘as’. Який тип отримає middleNameLength ...

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Safe call

оператор, Elvis оператор та ‘as’. Який тип отримає

middleNameLength

в першому і другому випадках? Який

тип отримає змінна

p1?

1)

var p = Person(first = “North”, middle = null, last = “West”)

val middleNameLength = p.middle?.length

2)

var p = Person(first = “North”, middle = null, last = “West”)

val middleNameLength = p.middle?.length ?: 0

 

val p1 = p as? Person

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