c ++最大std :: string长度是由堆栈大小还是堆大小决定的？ [英] c++ maximum std::string length is dictated by stack size or heap size?

问题描述

如问题中所述。

std :: string myVar;它可以容纳的最大字符由堆栈或堆？

as asked in the question.
std::string myVar; the maximum character it can hold is dictated by stack or heap?

谢谢

推荐答案

code> std :: string 是动态分配的。

By default, the memory allocated for std::string is allocated dynamically.

注意 std :: string 有一个 max_size（）函数返回实现支持的最大字符数。这是有用的，虽然，因为它是一个实现最大值，并没有考虑其他资源，如内存。你的实际限制要低得多。 （尝试分配4GB的连续内存，或考虑其他地方的内存耗尽。）

Note that std::string has a max_size() function returning the maximum number of character supported by the implementation. The usefulness of this is questionable, though, as it's a implementation maximum, and doesn't take into consideration other resources, like memory. Your real limit is much lower. (Try allocating 4GB of contiguous memory, or take into account memory exhaustion elsewhere.)

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