Using Design patterns is to reuse the ways that past designers discovered without efforts of rediscovering it. MVC or Model view contoller triad is an good antiqueted example of design pattern.
The book that introduced the term design patter to software development, Design Patterns: elements of reusable object-oriented software or GoF says:
- [Design patterns] solve specific design problems and make object-oriented desings more flexiblem elegant, and ultimately reusable. They help designers reuse successful designs by basing new designs on prior experience. A designer who is familiar with such patterns can apply them immediately to design problems without having to rediscover them.
In computer programming, the incredible gap on productivility between amatures and expers is partly a different in experience, if not all. Experts have weathered a lot of problems again and again. Typically experts end up with the same pattern to solve the problems as each other's. That is a design pattern. (GoF)
Each pattern comes up with the problem that happens again and again among programmers. Then it shows a typical solution for such a problem, if not the best alog with the trade-off, which is convinient to assess that apply the solution before it costs too much to accept. It is important that patterns accompany a name because it makes possible to describe problems, solutions and talk about them with other folks.
See also anti-pattern, amelioration pattern
Creational patterns
- Abstract factory pattern
- Builder pattern
- Factory method pattern
- Prototype pattern
- Singleton pattern - an object which is unique in it's kind in the whole system
Structural patterns
- Adapter pattern
- Bridge pattern
- Composite pattern - a pattern to build large structures
- Decorator pattern
- Facade pattern
- Flyweight pattern
- Proxy pattern
Behavioral patterns
- Chain of responsibility pattern
- Command pattern
- Interpreter pattern
- Iterator pattern
- Mediator pattern
- Memento pattern
- Observer pattern - one object acts when some value of another objects changes
- State pattern
- Strategy pattern - make an algorithm pluggable
- Template method pattern
- Visitor pattern
- Hierarchical visitor pattern
Concurrency patterns
- Balking pattern
- Guarded suspension
- Scheduler pattern
- Read write lock pattern
- Double checked locking pattern
- Disable job requests while running job pattern
RealTime patterns
User interface patterns
- User interface pattern
- Dynamic user interface pattern
- Static user interface pattern
- Disable job requests while running job pattern
Life cycle patterns
Social
Self-improvement patterns
Related Topics
External Links
Credit
- The list of design patterns is entirely based on a wiki page http://c2.com/cgi/wiki?CategoryPattern.
- The definition of design pattern is based on GoF.