C# null 合并运算符等效于 c++

Question

C# 空合并运算符是否有 C++ 等价物？我在我的代码中做了太多的空检查。所以一直在寻找一种方法来减少空代码的数量。

Answer 1

我刚刚发现:The ?? operator aka the Null Coalescing Operator

You also have it in C/C++ as a GNU extension using the ?: operator :

string pageTitle = getTitle() ?: "Default Title";