"optional chaining" 和 "optional call chaining" 在 Swift 中的区别
Difference between "optional chaining" and "optional call chaining" in Swift
Swift中的"optional chaining"和"optional call chaining"在语义上有区别吗？
暂时我会回答不，没有语义差异。
"Optional Chaining" 在那本书的 "The Swift Programming Language (Swift 2 Prerelease), both in its own section (Optional Chaining) and in later discussions on protocols and types. I don't see " 可选调用链中进行了广泛讨论。
谷歌搜索 "optional call chaining" returns 这个问题，所以我不确定 "optional call chaining" 在什么情况下发生。
Swift中的"optional chaining"和"optional call chaining"在语义上有区别吗？
暂时我会回答不，没有语义差异。
"Optional Chaining" 在那本书的 "The Swift Programming Language (Swift 2 Prerelease), both in its own section (Optional Chaining) and in later discussions on protocols and types. I don't see " 可选调用链中进行了广泛讨论。
谷歌搜索 "optional call chaining" returns 这个问题，所以我不确定 "optional call chaining" 在什么情况下发生。