std::basic_string_view::copy
size_type copy( CharT* dest, size_type count, size_type pos = 0) const; | | (since C++17) |
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复制子字符串[pos, pos + rcount)指向的字符串dest，在哪里rcount是较小的count和size() - pos...
参数
dest | - | pointer to the destination character string |
|---|---|---|
pos | - | position of the first character |
count | - | requested substring length |
返回值
复制的字符数。
例外
std::out_of_range如果pos > size()...
复杂性
线性在rcount...
另见
substr | returns a substring (public member function) |
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