Write S.O.L.I.D code

Learn how to write Object Oriented S.O.L.I.D code

Transcript

1. @yot88
   By yoan thirion
   S.O.L.I.D principles
   

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2. @yot88
   bad code / Good code
   Bad code vs Good code
   Categorize each piece of code
   

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4. @yot88
   Singleton
   Tight Coupling
   Untestability
   Premature Optimization
   Indescriptive Naming
   Duplication
   Single Responsibility
   Open/Closed Principle
   Liskov Substitution
   Interface Segregation
   Dependency Inversion
   Patterns and anti-patterns
   

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   SRP
   A class should have only 1 responsibility
   

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   Software entities should be open for extension,
   but closed for modification.
   Open closed
   

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7. @yot88
   Subtypes must be substitutable for their base types.
   Liskov substitution
   

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8. @yot88
   Clients should not be forced to depend on methods
   that they do not use.
   Interface segregation
   

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9. @yot88
   High level modules should not depend on low level modules :
   both should depend on abstractions.
   DI
   

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10. @yot88
    Good code / bad code
    Align each piece of code with a S.O.L.I.D principle
    

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20. @yot88
    Let’s refactor using s.O.L.I.D
    

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21. @yot88
    exercises
    Practice S.O.L.I.D principles on code examples
    Clone the repository at : https://github.com/ythirion/solid-kata
    Foreach code example :
    • identify why it’s breaking the given principle
    • Write down your refactoring strategy
    • Refactor it
    

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22. @yot88
    Where do you stand ?
    No quite yet
    On the way
    Ready to roll
    

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