摘要：
template class oprional;//since C++17 The class template std::optional manages an optional contained value, i.e. a value that may or may not be presen 阅读全文
posted @ 2021-01-15 15:08
一骑红尘妃子笑!
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摘要：
#include <iostream> class Example { public: Example() { std::cout << "Default Example!" << std::endl; } Example(int id) : ID(id) { std::cout << "Examp 阅读全文
posted @ 2021-01-15 10:42
一骑红尘妃子笑!
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