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std::basic_stringbuf::swap(3) C++ Standard Libarystd::basic_stringbuf::swap(3) NAME std::basic_stringbuf::swap - std::basic_stringbuf::swap Synopsis void swap( basic_stringbuf& rhs ); (since C++11) (until C++20) void swap( basic_stringbuf& rhs ) noexcept(/* see below */); (since C++20) Swaps the state and the contents of *this and rhs. The behavior is undefined if Allocator does not propagate on swap and (since C++11) the allocators of *this and other are unequal. Parameters rhs - another basic_stringbuf Return value (none) Exceptions (since May throw implementation-defined exceptions. C++11) (un- til C++20) noexcept specification: (since noexcept(std::allocator_traits<Allocator>::propagate_on_con- tainer_swap::value C++20) || std::allocator_traits<Allocator>::is_always_equal::value) Notes This function is called automatically when swapping std::stringstream objects. It is rarely necessary to call it directly. Example // Run this code #include <iomanip> #include <iostream> #include <sstream> #include <string> int main() { std::istringstream one("one"); std::ostringstream two("two"); std::cout << "Before swap: one = " << std::quoted(one.str()) << ", two = " << std::quoted(two.str()) << ".\n"; one.rdbuf()->swap(*two.rdbuf()); std::cout << "After swap: one = " << std::quoted(one.str()) << ", two = " << std::quoted(two.str()) << ".\n"; } Output: Before swap: one = "one", two = "two". After swap: one = "two", two = "one". See also constructor constructs a basic_stringbuf object (public member function) swap swaps two string streams (C++11) (public member function of std::basic_stringstream<CharT,Traits,Allocator>) Category: * conditionally noexcept http://cppreference.com 2024.06.10 std::basic_stringbuf::swap(3)
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