### Explicitly Defined Template Classes

You can override the definition of a class template of a particular template class by providing a class definition for the type of class required. For example, the following class template creates a class for each type for which it is referenced, but that class may be inappropriate for a particular type:

    template<class M> class portfolio
    {
          double capital;
          M arr;
          // ...
    } ;

The type for which the template class is inappropriate can be defined by using the applicable template class name. Assuming the inappropriately defined type is stocks, you can redefine the class portfolio<stocks > as follows:

    class portfolio<stocks>
    {
          double capital;
          stocks yield;
          // ...
    };

An explicit specialization of a template class can be defined before the class template is declared. In particular, a template class such as portfolio<stocks> can be defined before its class template has been defined.

Class Templates

Class Template Declarations and Definitions
Nontype Template Arguments
Function Templates
Differences between Class and Function Templates