28 #include <xlnt/xlnt_config.hpp>    29 #include <xlnt/utils/optional.hpp> Enumerates the possible types a cell can be determined by it's current value. 
Definition: cell.hpp:36
bool operator!=(std::nullptr_t, const cell &cell)
Returns true if this cell is initialized. 
bool operator==(std::nullptr_t, const cell &cell)
Returns true if this cell is uninitialized. 
Describes the protection style of a particular cell. 
Definition: protection.hpp:36