CSE687 Lecture #10
CSE687 - Object Oriented Design
Lecture #10 - Substitution Principle
17 February 2009
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Contents
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../../webpages/CSE686.xml
../../webpages/CSE687.xml
../../webpages/CSE775.xml
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Contents
Syllabus
StudyGuideDesign.xml
StudyGuideTemplates.xml
StudyGuideClassRelationships.xml
www.research.att.com/~bs/homepage.html,
www.accu.org,
www.gotw.ca/publications/standard_c++_meets_managed_c++.htm,
www.codeproject.com,
www.sellsbrothers.com,
www.gotw.ca,
www.cuj.com,
devCentral.iftech.com,
www.ddj.com,
www.boost.org,
technetcast.ddj.com
../../webpages/officeHours.htm
This lecture covers the Liskov Substitution Principle and its powerful applications in design. Polymorphism follows
directly from Liskov Substitutability and helps us build loosely coupled systems.
Syllabus
Describes topics to be covered,
reading material for you to digest before coming to class, and due dates
for the assigned projects.
../projects/pr2s09.doc
../code/GraphHelp,
../code/GraphHelp
../code/ClassLayout
../presentations/Using Inheritance.ppt
Discusses several distinct design uses for inheritance.
The Command Pattern is an interesting application of inheritance:
..\code\demos\callback
..\code\demos\callback
..\code\demos\callback
../presentations/vtbl.vsd
../code/hiding
Illustrates errors caused by inappropriate overloading and use of default parameters.
../code/virtualfunctions
Demonstrates problems caused by omission of virtual destructors.
../code/hiding
Shows how to use heterogeneous objects in an STL container.
../presentations/principles.ppt#264,15,The Liskov Substitution Principle
This is a fundamental OOD principle, with some surprising subtleties when using C++ (see example project below).
../code/NonVirtualInterfaces
Liskov Substitutibility does not demand public virtual functions.
../code/casts
../presentations/DesignRules.ppt
Design rules and idioms that transcend Object Oriented Design.