C++中的vector<int>::size_type

2021-12-21 00:00:00 vector c++ size-type

这个 C++ 语句是什么意思?

What is meant by this C++ statement?

vector<int>::size_type x;

而且，这里的作用域运算符 :: 有什么用?换句话说，我们如何用英语阅读这个声明?

And, what is the use of the scope operator :: here? In other words, how do we read this statement in English?

例如对于X::x(){...}，我们说x()是一个成员函数class X.

For example, for X::x(){...}, we say that x() is a member function of class X.

推荐答案

size_type 是 vector<类型的(静态)成员类型/代码>.通常，它是 std::size_t 的 typedef，它本身通常是 unsigned int 的 typedef 或unsigned long long.
size_type is a (static) member type of the type vector<int>. Usually, it is a typedef for std::size_t, which itself is usually a typedef for unsigned int or unsigned long long.

相关文章