'Design Patterns: Elements of Reusable Object-Oriented Software' kitobida tavsiflangan 23 klassik shablonlardan qaysilarini o'z loyihalaringizda qo'lladingiz?

Loyihalarda men odatda quyidagi 23 ta klassik namunalarni qo'llayman:

• Singleton — sinfning yagona nusxasini ta'minlash uchun, masalan, logger uchun.
• Factory Method — konkret sinflarga bog'liq bo'lmagan ob'ektlarni yaratish uchun.
• Observer — voqealarga obuna bo'lishni amalga oshirish uchun, masalan, UI da.
• Strategy — bajarilish vaqtida algoritmni tanlash uchun.
• Decorator — ob'ektlarning funksionalligini dinamik tarzda kengaytirish uchun.

C# da Singleton namunasi misoli:

public sealed class Logger
{
    private static readonly Logger instance = new Logger();
    private Logger() { }
    public static Logger Instance => instance;
    public void Log(string message) {
        Console.WriteLine(message);
    }
}