Design Patterns

• Design patterns are common architectural approaches to a specific problem.
• All the design pattern are created to solve a specific problem.
• Design patterns are relevant to all the languages that using object oriented methods
• Design patterns can be classified into 3 categories according to their objectives.
  • Creational Patterns
  • Structural Patterns
  • Behavioural Patterns

SOLID Design Principles

Points to ask when you learning design pattern

• What is it ?
• Classification
• When we should use it? (use cases)
• How to do it ?
  • think about these three questions when you thinking to implement it
    • Who?
    • What?
    • How?