Hands-On Design Patterns with C++

Chapter 2

• What is the difference between a type and a template?

A template is not a type; it is a Factory for many different types with similar structures. A template is written in terms of generic types; substituting concrete types for these generic types results in a type generated from the template.

• What kinds of templates does C++ have?

There are class, function, and variable templates. Each kind of template generates the corresponding entities—functions in the case of function templates, classes (types) from class templates, and variables from variable templates.

• What kinds of template parameters do C++ templates have?

Templates can have type and non-type parameters. Type parameters are types. Non-type parameters can be integral ...