In the following:
在以下:
auto x = {0}; // auto deduction of std::initializer_list<int>
auto y = []() -> std::initializer_list<int> { return {0}; }(); //explicit
auto z = []() { return {0}; }(); // won't compile
auto x = {0}; // aut
阅读背景：
返回并自动推断std::initializer_list
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