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readme
course(s)
preface
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III
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IV
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afterthought(s)
appendix
reference(s)
example(s)
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pattern(s) / matrix / model(s) / resource(s)
behavioral patterns
behavioral patterns
communication
deal with algorithms and the assignment of responsibilities between objects
class
- template method -- the skeleton of an algorithm
- interpreter -- to evaluate expressions
object
composition
- mediator -- provides indirection for loose coupling
- chain of responsibility -- connect objects to interact
- observer -- to handle dependencies
encapsulating behavior
objectify!
- strategy -- algorithm
- command -- request
- state -- object state -> behavioral change
- visitor -- to extract behavior from class
- iterator -- access and traversal
observer
one-to-many dependencies and notification
structure
consequences
- abstract coupling between subject and observer
- support for broadcast
- deals with unexpected updates
implementation
- mapping subjects to observers
- observing more than one subject?
- who triggers the update - subject or client of subject
- dangling references to subject
- consistency of subject (before notification)
- adding observer-specific update protocols (push / pull)
- specifying modifications of interest (aspects)
- how to encapsulate update semantics
[]
readme
course(s)
preface
I
1
2
II
3
4
III
5
6
7
IV
8
9
10
V
11
12
afterthought(s)
appendix
reference(s)
example(s)
resource(s)
_
(C) Æliens 04/09/2009
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