psahni / solid_principles_nd_design_patterns

Implementation of solid principles and most useful design patterns

solid_principles_nd_design_patterns

Implementation of solid principles and most useful design patterns

1. Single Resp Principle Example

• Example:- Taxcalculator.new(employee) => We move out logic of tax calc from employee

2. Open closed Principle

• Example:- VehicleInsurance, HealthInsurance, HomeInsurance

3. Liskov Substitution Principle

• Example:- Ostrich Bird, Fly Interface

4. Interface Segregation Principle

• Example:- Print Copy Scan - Have smaller interfaces or small independent modules

5. Dependency Inversion/Dependency Injection

• Example:- Inject a low level dependency into class. ProductCatalog Class injecting ProductRepo class
• Payment example:- Stripe Payment, CreditCard Payment
• Have a common interface - order.pay(StripePayment.new)
• Abstractions should not depend upon details