Review - Design Patterns: Elements of Reusable Object-Oriented Software

Design Patterns: Elements of Reusable Object-Oriented SoftwareDesign Patterns: Elements of Reusable Object-Oriented Software by Erich Gamma
My rating: 5 of 5 stars

Depending on on how you think of programming, this book could be incredibly insightful, or horribly abstract and impractical. Since I prefer and tend to think in patterns and abstractions, I found this book close to my heart. It uses a variety of languages for examples, so a willingness to explore concepts, not practical solutions, is essential.

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Multiton

A fairly simple example of the multiton pattern, with a private constructor, and a tracker for created objects, the name being an integer identifier.

Salient Chacteristic(s)
A private keyed list for tracking objectsA private constructorNamed objectsCode

using System.Collections.Generic;
using System.Linq;

namespace DesignPatterns
{
    public class Multiton
    {
        //read-only dictionary to track multitons
        private static IDictionary<int, Multiton> _Tracker = new Dictionary<int, Multiton> { };

        private Multiton()
        {
        }

        public static Multiton GetInstance(int key)
        {
            //value to return
            Multiton item = null;

            //lock collection to prevent changes during operation
            lock (_Tracker)
            { 
                //if value not found, create and add
                if(!_Tracker.TryGetValue(key, out item))
                {
                    item = new Multiton();

                    //calculate next key
       …
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How do you deal with making sure your use of new technology is correct and free from code-smells, security issues, etc.? - Hashnode

Responding to How do you deal with making sure your use of new technology is correct and free from code-smells, security issues, etc.?:

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