The 30-Day .NET Challenge - Day 29: Generics & Custom Interfaces

Learn to enhance your maintainability with generics and custom interfaces in C#. Discover a better approach on Day 29 of our 30-Day .NET Challenge. Introduction Developers often tend to add unnecessary boxing in the code which can hamper application performance. The article demonstrates both inefficient and efficient approaches to avoid the issue. Learning Objectives What is Boxing Why non-generic interface approach is inefficient A recommended approach using generics Prerequisites for Developers Basic understanding of C# programming language. 30 Day .Net Challenge Getting Started What is Boxing? Boxing is the process of converting a value type into an object type. In other words, it means the allocation of objects on a heap rather than a stack. Therefore, a performance overhead because of increased memory usage and the need for garbage collection. Why non-generic interface approach is inefficient In the following scenario, each time a value is assigned to values, it undergoes boxing which can make your application suffer from performance pressure. public interface INumber { object Value { get; set; } } public class Number : INumber { public object Value { get; set; } } A recommended approach using generics Please find below the refactored version of the previous code snippet using generics which allows type safety without the need for boxing. public interface INumber { T Value { get; set; } } public class Number : INumber // Utilize generics to avoid boxing { public T Value { get; set; } } How to use Generics in practice var intNumber = new Number { Value = 123 }; var floatNumber = new Number { Value = 123.45f }; Complete Code Create another class named GenericCustomInterfaces and add the following code snippet public static class GenericCustomInterfaces { static List > intNumbers = new List >(); static List > doubleNumbers = new List >(); public static void Example() { // Populate the list with integers for (int i = 0; i (i)); } // Populate the list with doubles for (double d = 0.5; d (d)); } // Process and display integer numbers Console.WriteLine("Integer Numbers:"); foreach (var num in intNumbers) { Console.WriteLine(num.Value); } // Process and display double numbers Console.WriteLine("\nDouble Numbers:"); foreach (var num in doubleNumbers) { Console.WriteLine(num.Value); } } } Add the interface and its class implementation as follows public interface INumber { T Value { get; set; } } public class Number : INumber { public T Value { get; set; } public Number(T value) { Value = value; } } Execute from the main method as follows #region Day 29: Generics & Custom Interfaces static string ExecuteDay29() { GenericCustomInterfaces.Example(); return "Executed Day 29 successfully..!!"; } #endregion Console Output Integer Numbers: 0 1 2 3 4 5 6 7 8 9 Double Numbers: 0.5 1.5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5 Complete Code here: GitHub — ssukhpinder/30DayChallenge.Net C# Programming🚀 Thank you for being a part of the C# community! Before you leave: Follow us: Youtube | X | LinkedIn | Dev.to Visit our other platforms: GitHub More content at C# Programming Learn to enhance your maintainability with generics and custom interfaces in C# . Discover a better approach on Day 29 of our 30-Day .NET Challenge. C# Introduction Developers often tend to add unnecessary boxing in the code which can hamper application performance. The article demonstrates both inefficient and efficient approaches to avoid the issue. Learning Objectives What is Boxing Why non-generic interface approach is inefficient A recommended approach using generics What is Boxing Why non-generic interface approach is inefficient A recommended approach using generics Prerequisites for Developers Basic understanding of C# programming language. Basic understanding of C# programming language. 30 Day .Net Challenge 30 Day .Net Challenge 30 Day .Net Challenge Getting Started What is Boxing? Boxing is the process of converting a value type into an object type. In other words, it means the allocation of objects on a heap rather than a stack. Therefore, a performance overhead because of increased memory usage and the need for garbage collection. Why non-generic interface approach is inefficient In the following scenario, each time a value is assigned to values, it undergoes boxing which can make your application suffer from performance pressure. public interface INumber { object Value { get; set; } } public class Number : INumber { public object Value { get; set; } } public interface INumber { object Value { get; set; } } public class Number : INumber { public object Value { get; set; } } A recommended approach using generics Please find below the refactored version of the previous code snippet using generics which allows type safety without the need for boxing. public interface INumber { T Value { get; set; } } public class Number : INumber // Utilize generics to avoid boxing { public T Value { get; set; } } public interface INumber { T Value { get; set; } } public class Number : INumber // Utilize generics to avoid boxing { public T Value { get; set; } } How to use Generics in practice var intNumber = new Number { Value = 123 }; var floatNumber = new Number { Value = 123.45f }; var intNumber = new Number { Value = 123 }; var floatNumber = new Number { Value = 123.45f }; Complete Code Create another class named GenericCustomInterfaces and add the following code snippet public static class GenericCustomInterfaces { static List > intNumbers = new List >(); static List > doubleNumbers = new List >(); public static void Example() { // Populate the list with integers for (int i = 0; i (i)); } // Populate the list with doubles for (double d = 0.5; d (d)); } // Process and display integer numbers Console.WriteLine("Integer Numbers:"); foreach (var num in intNumbers) { Console.WriteLine(num.Value); } // Process and display double numbers Console.WriteLine("\nDouble Numbers:"); foreach (var num in doubleNumbers) { Console.WriteLine(num.Value); } } } public static class GenericCustomInterfaces { static List > intNumbers = new List >(); static List > doubleNumbers = new List >(); public static void Example() { // Populate the list with integers for (int i = 0; i (i)); } // Populate the list with doubles for (double d = 0.5; d (d)); } // Process and display integer numbers Console.WriteLine("Integer Numbers:"); foreach (var num in intNumbers) { Console.WriteLine(num.Value); } // Process and display double numbers Console.WriteLine("\nDouble Numbers:"); foreach (var num in doubleNumbers) { Console.WriteLine(num.Value); } } } Add the interface and its class implementation as follows public interface INumber { T Value { get; set; } } public class Number : INumber { public T Value { get; set; } public Number(T value) { Value = value; } } public interface INumber { T Value { get; set; } } public class Number : INumber { public T Value { get; set; } public Number(T value) { Value = value; } } Execute from the main method as follows #region Day 29: Generics & Custom Interfaces static string ExecuteDay29() { GenericCustomInterfaces.Example(); return "Executed Day 29 successfully..!!"; } #endregion #region Day 29: Generics & Custom Interfaces static string ExecuteDay29() { GenericCustomInterfaces.Example(); return "Executed Day 29 successfully..!!"; } #endregion Console Output Integer Numbers: 0 1 2 3 4 5 6 7 8 9 Double Numbers: 0.5 1.5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5 Integer Numbers: 0 1 2 3 4 5 6 7 8 9 Double Numbers: 0.5 1.5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5 Complete Code here: GitHub — ssukhpinder/30DayChallenge.Net Complete Code here: GitHub — ssukhpinder/30DayChallenge.Net GitHub — ssukhpinder/30DayChallenge.Net C# Programming🚀 Thank you for being a part of the C# community! Before you leave: Follow us: Youtube | X | LinkedIn | Dev.to Visit our other platforms: GitHub More content at C# Programming Youtube X LinkedIn Dev.to GitHub C# Programming