C++
字符串 | Strings

std::basic_string_view::copy

性病:基本[医]弦[医]意见:复制

size_type copy( CharT* dest, size_type count, size_type pos = 0) const;(since C++17)

复制子字符串[pos, pos + rcount)指向的字符串dest,在哪里rcount是较小的countsize() - 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

substrreturns a substring (public member function)

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