std::mask_array<T>::mask_array - cppreference.com

private:
mask_array();

public:
mask_array() = delete;

public:
mask_array( const mask_array& other );

1) The default constructor is declared private and not defined(until C++11)explicitly defined as deleted(since C++11): mask_array is not DefaultConstructible.

2) Constructs a mask_array from another mask_array other.

Parameters

Defect reports

The following behavior-changing defect reports were applied retroactively to previously published C++ standards.