19.14 Chapter Summary
This chapter covered these topics:
- Object oriented concepts and vocabulary
- Object oriented notation
- Standard object oriented Modula-2 extensions.
- Classes, attributes, methods, data access, visibility and inheritance
- Subclasses, overriding methods in OOM-2
- Traced and untraced object classes
- Safeguarded and unsafeguarded module containers
- Circular definitions and self-reference
- Assignment, comparison, reference, and membership test of OOM-2 objects
- Instantiation and destruction
- Classes, attributes, methods, data access, visibility and inheritance
- Some design examples
It included discussion of the following Modula-2 items:
| Reserved Words | Standard Identifiers |
|---|
| FORWARD (new) | none |
| FINALLY (new) | |
and of the following Object Oriented Modula-2 items:
| Reserved Words | Standard Identifiers |
|---|
| AS | CREATE |
| ABSTRACT | DESTROY |
| CLASS | EMPTY |
| GUARD | ISMEMBER |
| INHERIT | SELF |
| OVERRIDE | |
| READONLY | |
| REVEAL | |
| TRACED | |
| UNSAFEGUARDED | |
Imports:
Standard Library Imports
From M2OOEXCEPTION:
M2OOExceptions, M2OOException, IsM2OOException
From COROUTINES
DISPOSECOROUTINE
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