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POUnderstanding .Net Generics - Bank Domain
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  1. POUnderstanding .Net Generics - Bank Domain
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    copied!<p>This is an attempt to learn Generics (with .Net 4.0). I have been programming for about 4.5 years. Till now I have not used Generics in real time projects. All the time what I have been doing is reading some article about generics and try to understand it. The problem is – most of them try to explains various syntax available with Generics. They explain with examples such as Square, Circle and shapes.</p> <p>Now I have got a chance to design a small application. I would like to use Generics there. [I do see good chances of Generics being a good candidate in my new project]</p> <p>What I have come up with now is an example from Bank domain with the intention of understanding Generics. I am trying to understand the following 4.</p> <p>1) Generic classes</p> <p>2) Generic Methods</p> <p>3) Generic Interfaces</p> <p>4) Generic Delegates</p> <p>EDIT: Operations that are type-independant are good candidates for generics. This is the one of the biggest points I missed in my following example.</p> <p>I have created an example for “Generic classes”. Could you please help with simple examples for other three items with the Bank domain?</p> <p>Note: While using Generic class, I came to know that it helped in <strong>Open-Closed Principle</strong>. Even if I add new account type, the generic class need to change. The changing logic (interest calculation) goes inside the specific class.</p> <p>Note: In the following, the syntax may not be correct as it typed it without a Visual Studio. But the concept holds good.</p> <p><strong>EDIT:</strong> Will "AccountManager" be a more better name for "BankAccount" class based on its role? Is it any kind of anti-pattern?</p> <p><strong>Generic Class</strong> - Example with Bank Domain</p> <pre><code>Public Interface IBankAccount { Public int Interest; Public Int DepositedAmount; Public int DurationInMonth; } Public class FixedAccount: IbankAccount { Public int Interest { Get { Return (DurationInMonth*0.5) } } Public Int DepositedAmount {get;set}; Public int DurationInMonth {get;set}; } Public class SavingsAccount: IbankAccount { Public int Interest { Get { Return ((DurationInMonth/2)*0.1) } } Public Int DepositedAmount {get;set}; Public int DurationInMonth {get;set}; } Public Class BankAccount&lt;T&gt; Where T: IbankAccount { T account = new T(); Public void CreateAccount(int duration, int amount) { account. DurationInMonth = duration; account. DepositedAmount = amont; int interestVal = account. Interest; SaveToDatabase (T); } } </code></pre> <p>READING:</p> <ol> <li><p><a href="https://stackoverflow.com/questions/799369/when-is-it-appropriate-to-use-generics-versus-inheritance">When is it Appropriate to use Generics Versus Inheritance?</a></p></li> <li><p><a href="https://stackoverflow.com/questions/2642598/generics-vs-inheritance-when-no-collection-classes-are-involved">Generics vs inheritance (when no collection classes are involved)</a></p></li> <li><p><a href="https://codereview.stackexchange.com/questions/8797/how-to-make-sure-that-this-code-conforms-to-open-close-principle">https://codereview.stackexchange.com/questions/8797/how-to-make-sure-that-this-code-conforms-to-open-close-principle</a></p></li> <li><p><a href="https://stackoverflow.com/questions/7876462/a-factory-pattern-that-will-satisfy-the-open-closed-principle">A Factory Pattern that will satisfy the Open/Closed Principle?</a></p></li> <li><p><a href="https://stackoverflow.com/questions/573584/im-having-some-trouble-with-generics-and-casting-in-c-sharp">I&#39;m having some trouble with generics and casting in C#</a></p></li> <li><p>Deciding When and Where to Use Generics <a href="http://en.csharp-online.net/CSharp_Generics_Recipes" rel="nofollow noreferrer">http://en.csharp-online.net/CSharp_Generics_Recipes</a>—Deciding_When_and_Where_to_Use_Generics_Problem</p></li> <li><p><a href="https://stackoverflow.com/questions/2321788/code-reuse-through-generics-vs-polymorphism">Code reuse through generics vs polymorphism</a></p></li> <li><p><a href="https://stackoverflow.com/questions/634025/polymorphism-and-type-safety-in-parallel-inheritance-chains">Polymorphism AND type safety in parallel inheritance chains</a></p></li> <li><p><a href="https://stackoverflow.com/questions/4136596/extending-using-c-sharp-generics">Extending using C# generics?</a></p></li> <li><p><a href="https://stackoverflow.com/questions/1814851/c-sharp-generics-and-polymorphism-an-oxymoron">C# Generics and polymorphism: an oxymoron?</a></p></li> </ol>
 

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