Accessing static member locale::id

The following code snippet is an example that shows how to use locale::id when writing an application on top of the Standard Template Library (STL).When defining a class base_facet inherited from locale::facet in a header file, declare a static method GetFacetLocaleId() instead of the member variable id.

//b_facet.h

class base_facet : public locale::facet 
{ 
public: 
static locale::id&amp; 
GetFacetLocaleId();       // in place of static locale::id
id; 
};

In the source file define the method GetFacetLocaleId().

//b_facet.cpp

locale::id base_facet_id; 
locale::id&amp; 
base_facet::GetFacetLocaleId()
{ 
return base_facet_id; 
}