多维 std::array
在 C++ 中，如何创建多维 std::array?我试过这个:
In C++, how do I create a multidimensional std::array? I've tried this:
std::array<std::array<int, 3>, 3> arr = {{5, 8, 2}, {8, 3, 1}, {5, 3, 9}};
但它不起作用.我做错了什么，我该如何解决?
But it doesn't work. What am I doing wrong and how do I fix this?
推荐答案
你需要额外的括号，直到 c++14 提案 生效.
You need extra brackets, until c++14 proposal kicks in.
std::array<std::array<int, 3>, 3> arr = {{{5, 8, 2}, {8, 3, 1}, {5, 3, 9}}};
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