c++ - Slicing std::array -

is there easy way slice of array in c++?

i.e., i've got

array<double, 10> arr10; 

and want array consisting of 5 first elements of arr10:

array<double, 5> arr5 = arr10.??? 

(other populating iterating through first array)

the constructors std::array implicitly defined can't initialize container or range iterators. closest can create helper function takes care of copying during construction. allows single phase initialization believe you're trying achieve.

template<class x, class y> x copyarray(const y& src, const size_t size) {     x dst;     std::copy(src.begin(), src.begin() + 5, dst.begin());     return dst; } std::array<int, 5> arr5 = copyarray<decltype(arr5)>(arr10, 5); 

you can use std::copy or iterate through copy yourself.

std::copy(arr10.begin(), arr10.begin() + 5, arr5.begin());