https://github.com/jrvansuita/mydesignpatterns

https://github.com/jrvansuita/mydesignpatterns

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• Host: GitHub
• URL: https://github.com/jrvansuita/mydesignpatterns
• Owner: jrvansuita
• Created: 2022-07-26T23:43:32.000Z (over 2 years ago)
• Default Branch: master
• Last Pushed: 2022-07-27T00:02:42.000Z (over 2 years ago)
• Last Synced: 2023-03-09T02:06:45.493Z (over 1 year ago)
• Language: Kotlin
• Size: 95.7 KB
• Stars: 1
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: readme.md

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README

        

# My Most Used Design Patterns 

*Will keep updated as I can [🔗](https://www.raywenderlich.com/18409174-common-design-patterns-and-app-architectures-for-android)*

### Creational Patterns

Helps creates an instance of complex objects. Also provides default or commonly used instances creations.

- [Builder](src/main/kotlin/patterns/creational/Builder.kt)

```kotlin

//The builder pattern consists on creating an easy builder interface to create complex objects on demand.

val sandwich = SandwichBuilder.Builder(BreadTypes.FlatBread)

    .setCheese(CheeseTypes.Parmesan)

    .setMeat(MeatTypes.Turkey)

    .addVegetables(VegetablesTypes.Lettuce, VegetablesTypes.Onions)

    .build()

// You can either provide commonly used builders, witch gives you ready-to-use object instances

val traditionalSandwich = SandwichBuilder.traditional()

val healthySandwich = SandwichBuilder.superHealthy()

```

- [Dependency Injection](src/main/kotlin/patterns/creational/DependencyInjection.kt)

```kotlin

//The Dependency Injection pattern consists on providing as constructor parameter all required objects needed to correctly instantiate

//Use interfaces methods to execute tasks like rolling the dice, as declared in @models.dice.DiceContract and implemented here.

class DiceRoller(private val dice: DiceContract) : DiceRollerContract {

    override fun execute() = dice.roll()

}

class Dice(private val sizes: Int = 6) : DiceContract {

    override fun roll() = (1..sizes).random()

}

//Call like this

DiceRoller(Dice(6)).execute()

```

- Singleton

- Factory

### Structural Patterns

- Adapter

- Facade

- Decorator

- Composite

- Behavioral Patterns

### Behavioral Patterns

- Command

- Observer

- Strategy

- State