Chapter 8. Reflection

D supports limited runtime reflection out of the box as well as rich compile-time reflection that can be used in code generation efforts, custom semantic checks, building additional runtime reflection information, and more. In this chapter, we'll be covering the following recipes:

• Getting dynamic runtime type information

• Getting a list of child classes

• Determining whether a module is available

• Getting a list of all methods or fields in a module or an object

• Inspecting function overloads

• Determining names, types, and default values of function parameters

• Getting components of complex types

• Using user-defined attributes

• Implementing a custom lint-style check for virtual functions

• Extending the runtime type information

• Creating a command-line function caller