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method< _R > 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< _R >:

[legend]Collaboration diagram for method< _R >:

[legend]List of all members.

Public Types
typedef _R	return_type
Public Methods
virtual const return_type &	operator() () VDBL_PURE_VIRTUAL virtual const return_type &def() VDBL_PURE_VIRTUAL virtual void setcontext(const context *_c

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Detailed Description

template<class _R>
class method< _R >

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 100 of file vdbl_method.h.

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Member Typedef Documentation

template<class _R> typedef _R method< _R >::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< _R >. Definition at line 107 of file vdbl_method.h.

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Member Function Documentation

template<class _R> virtual const return_type& _VDBL_method< _R >::operator() (    )  const [virtual, inherited]

set the evaluation context and the evaluation row.

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The documentation for this class was generated from the following file:

• vdbl_method.h

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