SpletReturns a pointer to a null-terminated character array with data equivalent to those stored in the string. The pointer is such that the range [c_str(); c_str() + size()] is valid and the values in it correspond to the values stored in the string with an additional null character after the last position.. The pointer obtained from c_str() may be invalidated by: Splet11. jan. 2024 · v.shrink_to_fit(); // shrink the vector to the required capacity. On the other hand, if the vector is not long-living and you do not foresee memory issues, leave it as is. …

std::basic_string::shrink_to_fit - cppreference.com

Splet28. jul. 2024 · C++ 已经提供了一些字符串处理函数，这些函数被封装在头文件 和 中。 1.1. 字符串复制 void * memcpy ( void * destination, const void * source, size_t num ); 从 source 指针指向的内存拷贝 num 个字节到 destination 指针指向的内存；拷贝的是二进制数据，与两个指针类型没有 ... SpletAccording to the C++ Standard relative to shrink_to_fit. Effects: shrink_to_fit is a non-binding request to reduce capacity () to size (). and relative to resize. Effects: If sz < size … gary glitter heute

dynamic_bitset - 1.82.0

SpletThis is the documentation for a development version of boost. string::shrink_to_fit Request the removal of unused capacity. Synopsis void shrink_to_fit(); Description This performs a non-binding request to reduce capacity() to size(). The request may or may not be fulfilled. Complexity At most, linear in size() . Remarks SpletThe C++ string::shrink_to_fit function is used to change the string capacity and makes it equal to the size of the string. This may cause a reallocation, but there will be no effect … Spletstd::basic_string:: shrink_to_fit From cppreference.com < cpp‎ string‎ basic stringcpp‎ string‎ basic string black sports women