C++17 Structured Binding

• 在 VS2019 中通过 如下步骤打开 C++17 的支持：

• Open the project's Property Pages dialog box. For details, see Set C++ compiler and build properties in Visual Studio.
• Select Configuration Properties, C/C++, Language.
• In C++ Language Standard, choose the language standard to support from the dropdown control, then choose OK or Apply to save your changes.

#include <iostream>
#include <vector>
struct MyType {
	std::string name;
	int type;
};

std::vector<MyType> getMyTypes() {
	return std::vector<MyType> { {"name1", 1}, { "name2", 2 }, { "name3", 3 }};
}

void dumpTypesCpp11() {
	std::cout << __FUNCTION__ << std::endl;
	for (const auto& v : getMyTypes()) {
		std::cout << v.name << ": " << v.type << std::endl;
	}
}

void dumpTypesCpp17() {
	std::cout << __FUNCTION__ << std::endl;
	for (const auto& [name, type] : getMyTypes()) {
		std::cout << name << ": " << type << std::endl;
	}
}

int main()
{
	dumpTypesCpp11();
	dumpTypesCpp17();
}