State the difference between strong, weak, read only and copy.

State the difference between strong, weak, read only and copy.

题目类型: 技术面试题

这是一道技术面试题，常见于澳洲IT公司面试中。

难度: hard

标签: interviewbit, ios, topic-specific, mobile

参考答案摘要

The difference between strong, weak, read-only and copy is as follows: Strong: This property maintains a reference to property throughout the lifetime of an object. When you declare strong, you intend...

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