Highlight the key difference between Upcast and Downcast in ios Swift.

Highlight the key difference between Upcast and Downcast in ios Swift.

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: easy

标签: interviewbit, swift, topic-specific, ios

参考答案摘要

The key difference between Upcast and Downcast in ios Swift is that upcasting from a derived to a base class can be verified at compile-time and will never fail to compile and Downcasts, on the other ...

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