conststd::vector<T>和std::vector<T>const有什么区别？

html5 • • 问答

我认为声明 a 的唯一方法const<vector>是：

const std::vector<T> v;

回答

const 适用于它左边的东西，除非左边没有任何东西，然后它适用于它右边的东西。

所以，const int a=1;和int const a=1;是相等的。

const int *b和int const *b相等（指向常量的指针int），但与 不同int * const b，后者是指向非常量的常量指针int。

这适用于所有数据类型，我选择int它是因为它比std::vector<T>.

  • And the West Const/East Const battle still continues to this day....
  • "`const` goes to the left" is ambiguous; it can mean "`const` applies to whatever is on its left" as you intended, but it can also mean "`const` should be written to the left of whatever it should apply to", which is wrong. Better to write "`const" applies to the thing to its left` or something like that, and similar with right.
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