std::vector<tag_t>& face

引用\[1\]:关键报错信息 /usr/local/include/c++/8.2.0/bits/basic_string.tcc:1067:1: error: cannot call member function 'void std::basic_string&lt;_CharT, _Traits, _Alloc&gt;::_Rep::_M_set_sharable() \[with _CharT = char32_t; _Traits = std:: char_traits&lt;char32_t&gt;; _Alloc = std::allocator&lt;char32_t&gt;\]' without object ninja: build stopped: subcommand failed. Traceback (most recent call last): File "/home/miniconda3/envs/motr/lib/python3.7/site-packages/torch/utils/cpp_extension.py", line 1423, in _run_ninja_build check=True) File "/home/miniconda3/envs/motr/lib/python3.7/subprocess.py", line 512, in run output=stdout, stderr=stderr) subprocess.CalledProcessError: Command '\['ninja', '-v'\]' returned non-zero exit status 1. 解决方式 参考： https://blog.csdn.net/weixin_45328592/article/details/114646355 。

问题: std::vector<tag_t>& face是什么意思?
回答: std::vector<tag_t>& face是一个引用类型的参数，它是一个指向std::vector<tag_t>类型对象的引用。这个参数的类型是std::vector<tag_t>，它是一个动态数组，可以存储多个tag_t类型的元素。而&符号表示这是一个引用，它允许我们在函数内部修改原始的std::vector<tag_t>对象。
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