iter_move(std::move_iterator) - cppreference.com (original) (raw)
Casts the result of dereferencing the underlying iterator to its associated rvalue reference type.
Equivalent to return std::ranges::iter_move(i.base());.
This function template is not visible to ordinary unqualified or qualified lookup, and can only be found by argument-dependent lookup when std::move_iterator<Iter> is an associated class of the arguments.
[edit] Parameters
| i | - | a source move iterator |
|---|
[edit] Return value
An rvalue reference or a prvalue temporary.
[edit] Complexity
Constant.
[edit] Exceptions
[edit] Example
#include #include #include #include #include void print(const auto& rem, const auto& v) { std::cout << rem << '[' << size(v) << "] { "; for (char comma[]{0, ' ', 0}; const auto& s : v) std::cout << comma << std::quoted(s), comma[0] = ','; std::cout << " }\n"; } int main() { std::vector<std::string> p{"Andromeda", "Cassiopeia", "Phoenix"}, q; print("p", p), print("q", q); using MI = std::move_iterator<std::vector<std::string>::iterator>; for (MI first{p.begin()}, last{p.end()}; first != last; ++first) q.emplace_back(/* ADL */ iter_move(first)); print("p", p), print("q", q); }
Possible output:
p[3] { "Andromeda", "Cassiopeia", "Phoenix" } q[0] { } p[3] { "", "", "" } q[3] { "Andromeda", "Cassiopeia", "Phoenix" }
[edit] See also
| iter_move(C++20) | casts the result of dereferencing an object to its associated rvalue reference type(customization point object)[edit] |
|---|---|
| iter_move(C++20) | casts the result of dereferencing the adjusted underlying iterator to its associated rvalue reference type (function) [edit] |
| move(C++11) | converts the argument to an xvalue (function template) [edit] |
| move_if_noexcept(C++11) | converts the argument to an xvalue if the move constructor does not throw (function template) [edit] |
| forward(C++11) | forwards a function argument and use the type template argument to preserve its value category (function template) [edit] |
| ranges::move(C++20) | moves a range of elements to a new location(algorithm function object)[edit] |
| ranges::move_backward(C++20) | moves a range of elements to a new location in backwards order(algorithm function object)[edit] |