The flyweight pattern is used to minimize memory usage or computational expenses by sharing as much as possible with other similar objects.
Github https://github.com/sergeyleschev/design-patterns
Example
// Instances of SpecialityCoffee will be the Flyweights
struct SpecialityCoffee {
let origin: String
}
protocol CoffeeSearching {
func search(origin: String) -> SpecialityCoffee?
}
// Menu acts as a factory and cache for SpecialityCoffee flyweight objects
final class Menu: CoffeeSearching {
private var coffeeAvailable: [String: SpecialityCoffee] = [:]
func search(origin: String) -> SpecialityCoffee? {
if coffeeAvailable.index(forKey: origin) == nil {
coffeeAvailable[origin] = SpecialityCoffee(origin: origin)
}
return coffeeAvailable[origin]
}
}
final class CoffeeShop {
private var orders: [Int: SpecialityCoffee] = [:]
private let menu: CoffeeSearching
init(menu: CoffeeSearching) {
self.menu = menu
}
func takeOrder(origin: String, table: Int) {
orders[table] = menu.search(origin: origin)
}
func serve() {
for (table, origin) in orders {
print("Serving \(origin) to table \(table)")
}
}
}
Usage
let coffeeShop = CoffeeShop(menu: Menu())
coffeeShop.takeOrder(origin: "Yirgacheffe, Ethiopia", table: 1)
coffeeShop.takeOrder(origin: "Buziraguhindwa, Burundi", table: 3)
coffeeShop.serve()
Sources: Github
Structural
In software engineering, structural design patterns are design patterns that ease the design by identifying a simple way to realize relationships between entities.
Source: wikipedia.org
🐝 Chain Of Responsibility
👫 Command Pattern
🎶 Interpreter Pattern
🍫 Iterator Pattern
💐 Mediator Pattern
💾 Memento Pattern
👓 Observer Pattern
🐉 State Pattern
💡 Strategy Pattern
📝 Template Method
🏃 Visitor Pattern
🌰 Abstract Factory
👷 Builder Pattern
🏭 Factory Method
🔂 Monostate Pattern
🃏 Prototype Pattern
💍 Singleton
🔌 Adapter Pattern
🌉 Bridge Pattern
🌿 Composite Pattern
🍧 Decorator Pattern
🎁 Facade Pattern
🍃 Flyweight Pattern
☔ Protection Proxy
🍬 Virtual Proxy
Contacts
I have a clear focus on time-to-market and don't prioritize technical debt. And I took part in the Pre-Sale/RFX activity as a System Architect, assessment efforts for Mobile (iOS-Swift, Android-Kotlin), Frontend (React-TypeScript) and Backend (NodeJS-.NET-PHP-Kafka-SQL-NoSQL). And I also formed the work of Pre-Sale as a CTO from Opportunity to Proposal via knowledge transfer to Successful Delivery.
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