45. C-sharp 12-08-2014

Created Tuesday 12 August 2014

1) Design Patterns - practical solutions
2) OO Design Principles

SOLID - implemented through Design Patterns

SOLID

Programming asp.net mvc 4

Single Responsibility Principle - SRP

One responsibility per class

Open/Closed Principle - OCP

Open for extension, closed for modification

Liskov Substitution Principle - LSP

Objects should be easily replaceable by instances of their subtypes without influencing other

Interface Segregation Principle - ISP

Instead of one superclass interface that contains all the behavior for an object, there should exist multiple, smaller, more specific interfaces

Dependency Injection Principle - DIP

Dependency Injection implemented through Inversion Of Control (IOC)

Article:

Dependency Injection Demystified
http://www.jamesshore.com/Blog/Dependency-Injection-Demystified.hmlt
In short: DI means giving an object its instance variables

Composition Root - класс, в котором создаются все объекты, которые инжектируются в другие объекты, отсюда - Composition Root Pattern



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