然后将一个已有对象的数据成员值取出来，赋值给新的对象。
a braced-init-list is bound to auto, including in a ranged for loop Initializer lists may be implemented as a pair of pointers or pointer and length. Copying a std::initializer_list does not copy the underlying objects 参考 list initialization and std::initializer_list...
)/移动 A(A&&) 初始化列表A(std::initializer_list) tuple类型std::tuple_size_v 类型擦除类型function any 剩下的场景能用就用...N + 1]) { std::copy_n(str, N + 1, std::data(data)); } [[nodiscard]] constexpr auto operator...table4(int idx) { constexpr static std::string_vie...
proxy objectassert(la.begin()==al.begin());// guaranteed: backing array is the samestd::initializer_list<int>il{-3,-2,-1};assert(il.begin()[2]==-1);// note the replacement for absent operator[]il=al;// shallow-copyassert(il.begin()==al.begin());// guaranteed// templated_...
std::stringname="MaxDumbledore";std::vector<std::string>nameList{name};//copy or move?在以往我...
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#include <algorithm> #include <initializer_list> #include <iostream> #include <iterator> int main() { std::initializer_list ϕ = {'1', '.', '6', '1', '8', '0'}; std::copy(std::begin(ϕ), std::end(ϕ), std::ostream_iterator<char>(std::cout, "")); std::cout <...
#include <iostream> #include <iterator> #include <algorithm> #include <initializer_list> int main() { std::initializer_list il = {3, 1, 4, 1, 5, 9}; std::reverse_copy(std::begin(il), std::end(il), std::ostream_iterator<int>(std::cout, " ")); } Output: 9 5 1 4 1...
( const auto& row : ilist ) // copy what is there in each row of ilist std::copy( row.begin(), row.end(), mtx[row_num++].begin() ) ; } // checked element access double& element_at( std::size_t i, std::size_t j ) { return mtx.at(i).at(j) ; } double element_at...
std::tuple<int&, int&, int&, int&> Then, with theinitializer-listoption array<Wrapper,3>X{0,1,2};tie(X[2],X[1],X[0])={X[0],X[1],X[2]}; we will see default-construct:0.default-construct:1.default-construct:2.copy-assign:2<-0.copy-assign:1<-1.copy-assign:0<-0. ...