Rose O. Efficient Code with C# 2024
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Rose O. Efficient Code with C# 2024
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Textbook in PDF format
Unlock the full potential of C# by learning how to write faster, cleaner, and more efficient code. Efficient Code with C# is your go-to resource for taking your development skills to the next level. Whether you're optimizing performance, managing memory more effectively, or building scalable applications, this book provides clear, practical guidance grounded in real-world experience.
Designed for intermediate to advanced developers, this book focuses on writing code that not only works but excels—code that is maintainable, robust, and ready for production. You’ll explore critical concepts such as memory management, multithreading, data structure selection, and performance profiling, all within the C# and .NET ecosystem.
With hands-on examples, expert tips, and proven techniques, you'll gain the confidence to make smarter coding decisions and build high-performance applications that stand the test of time. If you're serious about understanding C#, this book is an essential addition to your professional toolkit.
Writing efficient C # code doesn't begin with advanced optimization techniques or complex algorithms. It starts with clarity. Clean code is not just aesthetically pleasing—it’s foundational to maintainability, collaboration, performance tuning, and scalability. In this chapter, we’ll explore the core principles of clean code with a C# lens, focusing on naming conventions, formatting, function structure, and overall code clarity.
Whether you're writing business logic, handling asynchronous operations, or building performance-critical services, applying clean code principles helps ensure that your solutions are robust, easy to read, and easy to evolve.
Whether you're working on desktop, web, or backend systems, the principles in this book will help you think more critically about how you write and structure your code. The goal isn’t just to code faster—it’s to code smarter.
Let’s dive in and explore how to unlock the full potential of C# through thoughtful, efficient design.
Preface
Foundations of Efficient Coding
The Pillars of Clean Code in C#
Maintainability and Its Long-Term Impact
Performance Starts with Good Design
The Cost of Neglecting Efficiency
A Pragmatic Approach to Writing Better Code
Clean Code Principles in C#
Why Clean Code Matters in C#
Naming: Clarity Through Precision
Meaningful and Descriptive Names
Naming Conventions in C#
Avoid Noise Words
Formatting: Structure That Speaks
Indentation and Braces
Vertical Spacing
Line Length and Readability
Functions: Focused, Short, and Intentional
Function Length
Function Parameters
Avoiding Magic Numbers and Strings
Comments: Write Code That Doesn’t Need Them
Code Smells to Avoid
Example of Guard Clause
Tools and Practices That Enforce Clean Code
Conclusion
Code Smells and Refactoring
Long Methods
Duplicated Code
Excessive Object Allocation
Magic Numbers and Strings
Unused or Dead Code
Designing for Maintainability
The Importance of Maintainability
Structuring the Project: Folders and Boundaries Example Folder Structure
Designing with Abstraction Layers
Naming Conventions: Clarity and Consistency
Enabling Testing and Decoupling
Supporting Unit and Integration Testing
Refactoring for Maintainability
Documentation and Developer Onboarding
Memory Management in .NET
Understanding the .NET Memory Model
Garbage Collection in .NET
Avoiding Memory Leaks
Practical Tips for Efficient Memory Use
Profiling and Diagnostics
Performance Costs of Boxing and Unboxing
Heap Allocation
Cache Locality Loss
Garbage Collection Impact
Type Safety Risks
Common Scenarios Where Boxing Happens
Using Value Types with object
Value Types in Non-Generic Collections
Implementing Interfaces
String Formatting
Alternatives and Best Practices
Use Generics
Use Span and Memory
Use ToString Carefully
Minimize Interface Usage with Structs
Avoid LINQ with Value Types in Hot Paths
Measuring the Impact
Conclusion. Multithreading and Concurrency