Inheritance diagram for c4_RowRef:
Public Member Functions | |
| c4_RowRef | operator= (const c4_RowRef &) |
| Assign the value of another row to this one. | |
| c4_Cursor | operator & () const |
| Return the cursor associated to this row. | |
| c4_View | Container () const |
| Return the underlying container view. | |
Protected Member Functions | |
| c4_RowRef (c4_Cursor) | |
| Constructor, not for general use. | |
Friends | |
| class | c4_Cursor |
| class | c4_Row |
Row references are created when dereferencing a c4_Cursor or when indexing an element of a c4_View. Assignment will change the corresponding item. Rows (objects of type c4_Row) are a special case of row references, consisting of a view with exactly one item.
Internally, row references are very similar to cursors, in fact they are little more than a wrapper around them. The essential difference is one of semantics: comparing row references compares contents, copying row references copies the contents, whereas cursor comparison and copying deals with the pointer to the row, not its contents.