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S.Leschev Design Patterns (Swift 5+)

Google Engineering Level: L6+

🏆 Awards

Ranking #Dev: Global TOP 300 (Certificate)

Sergey Leschev

Languages: Swift, Shell, Database (T-SQL, PL/SQL, MySQL), Concurrency (Python3).

Algorithms: linked lists, binary search, hash table, queue/stack, dfs/bfs, sort, heap/hash, two pointers, sliding window, tree, greedy problems etc.

🎁 Facade

The facade pattern is used to define a simplified interface to a more complex subsystem.

Example

final class Defaults {

    private let defaults: UserDefaults

    init(defaults: UserDefaults = .standard) {
        self.defaults = defaults
    }

    subscript(key: String) -> String? {
        get {
            return defaults.string(forKey: key)
        }

        set {
            defaults.set(newValue, forKey: key)
        }
    }
}

Usage

let storage = Defaults()

// Store
storage["Bishop"] = "Disconnect me. I’d rather be nothing"

// Read
storage["Bishop"]

Contacts

I have a clear focus on time-to-market and don't prioritize technical debt.

🛩️ #startups #management #cto #swift #typescript #database

📧 Email: sergey.leschev@gmail.com

👋 LinkedIn: https://linkedin.com/in/sergeyleschev

👋 Twitter: https://twitter.com/sergeyleschev

👋 Github: https://github.com/sergeyleschev

🌎 Website: https://sergeyleschev.github.io

🖨️ PDF: Download

ALT: SIARHEI LIASHCHOU