More Design Patterns

Here's the design pattern tutorials that I've made so far. I probably won't be able to make any more the following month or so because of examns.

Programming Patterns
A programming pattern is a design pattern related solely to programming problems.

Behavioral patterns

• Observer
  Seperating problem areas and creating loose, event driven, object relationships
• Strategy
  Supplying different variants of an algorithm in a class
• Template method
  Supplying an algorithm that multiple classes can define parts of
  

Creational patterns

• Singleton
  Implmenting a class that has exactly one instance

Structural patterns

• Composite
  Combining serveral objects into an object that has the same behavior as its parts

Usability Patterns
A usability patterns deal with interfaces, human-computer interaction and related subjects.

• Magnetism
  Making it easier and less fustrating to do precise targeting
• Shield
  Preventing that a critical action is performed by accident