std::valarray::shift - cppreference.com (original) (raw)

| valarray<T> shift( int count ) const; | | | | -------------------------------------- | | |

Returns a new valarray of the same size with elements whose positions are shifted by count elements. The new position of each element is i−count where i is the previous position. The value of shifted in elements is T().

[edit] Parameters

[edit] Return value

The resulting valarray with shifted elements.

[edit] Notes

The function can be implemented with the return type different from std::valarray. In this case, the replacement type has the following properties:

• All const member functions of std::valarray are provided.
• std::valarray, std::slice_array, std::gslice_array, std::mask_array and std::indirect_array can be constructed from the replacement type.
• For every function taking a const std::valarray<T>& except begin() and end()(since C++11), identical functions taking the replacement types shall be added;
• For every function taking two const std::valarray<T>& arguments, identical functions taking every combination of const std::valarray<T>& and replacement types shall be added.
• The return type does not add more than two levels of template nesting over the most deeply-nested argument type.

[edit] Example

Output:

1 2 3 4 5 6 7 8 3 4 5 6 7 8 0 0

[edit] See also

| | circular shift of the elements of the valarray (public member function) [edit] | | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |