method< _TR > Class Template Reference
[Classes and types for external use]
base class for methods usable in method columns.
More...
#include <vdbl_method.h>
Inheritance diagram for method< _TR >:
Collaboration diagram for method< _TR >:
Public Types | |
| typedef _TR | return_type |
Public Member Functions | |
| virtual return_type | operator() () const VDBL_PURE_VIRTUALvirtual return_type def() const VDBL_PURE_VIRTUALvirtual void setcontext(const context *_c |
Detailed Description
template<class _TR>
class method< _TR >
This is the base class, from which all methods should be derived that are used in method_col columns. Its virtual methods are those required from a method used for computing column names dynamically. Such a method is a function object with two additional methods described below.
Definition at line 101 of file vdbl_method.h.
Member Typedef Documentation
template<class _TR >
| typedef _TR method< _TR >::return_type |
This is the type of the return value of the evaluation methods. Note that this type has to coincide with the column type.
Reimplemented from _VDBL_method< _TR >.
Definition at line 108 of file vdbl_method.h.
Member Function Documentation
| virtual return_type _VDBL_method< _TR >::operator() | ( | ) | const [virtual, inherited] |
compute the value compute the default value set the evaluation context and the evaluation row.
The documentation for this class was generated from the following file:
