Design Patterns in Practice

Master the art of writing scalable and maintainable code with 'Design Patterns in Practice.' This series demystifies core software design patterns using real-world examples in C# and Python. Learn SOLID principles, spot anti-patterns, and gain practical insights for modern development.

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Introduction to Design Patterns

Kickstart your journey into reusable software architecture with this introduction to design patterns, types, principles, and real-world analogies.

Tech Buddy
18 Jun, 2025
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Factory Pattern

Learn how the Factory Pattern enables flexible object creation without binding your code to specific classes. Includes C# and Python examples, UML, and real-world use cases.

Tech Buddy
20 Jun, 2025
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Singleton Pattern

Master the Singleton Pattern with step-by-step explanations, C# and Python code, real-world use cases, and common pitfalls. Learn how to manage shared instances the right way.

Tech Buddy
20 Jun, 2025
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Builder Pattern

Understand the Builder Pattern with detailed examples, C# and Python source code, and real-world use cases. Learn to construct complex objects step by step with ease.

Tech Buddy
22 Jun, 2025
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Prototype Pattern

Master object cloning with the Prototype Pattern. Understand shallow vs. deep copy, and implement it in real-world scenarios using C# and Python.

Tech Buddy
24 Jun, 2025
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Adapter Pattern: Making Incompatible Interfaces Work Together

Learn how the Adapter Pattern bridges mismatched interfaces to enable seamless integration. Includes C#, Python examples, UML, and real-world use cases.

Tech Buddy
26 Jun, 2025
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Decorator Pattern: Enhancing Behavior Dynamically

Learn how the Decorator Pattern allows behavior extension without modifying code. Includes C# and Python examples, UML, real-world use cases, and pros & cons.

Tech Buddy
28 Jun, 2025
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Proxy Pattern: Control Access and Enhance Behavior

Understand how the Proxy Pattern provides a surrogate to control access to real objects, allowing for behavior like access control, lazy loading, and logging. Includes C#/Python examples, UML, and real-world use cases.

Tech Buddy
29 Jun, 2025
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Proxy vs Decorator vs Adapter: Choose the Right Pattern

Confused between Proxy, Decorator, and Adapter? This blog compares their intent, use cases, and differences with real-world examples and guidance on when to use each.

Tech Buddy
01 Jul, 2025
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Strategy Pattern: Flexible Algorithms with Clean Separation

Master the Strategy Pattern to write flexible and interchangeable algorithms. Explore real-world examples, UML, and C#/Python code in this practical guide.

Tech Buddy
02 Jul, 2025
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Observer Pattern: Notify Dependents Automatically

Master the Observer Pattern to build dynamic, responsive systems that react seamlessly to changes. Dive deep into its UML structure, explore real-world scenarios where it shines, and reinforce your understanding through hands-on C# and Python implementations.

Tech Buddy
03 Jul, 2025
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Command Pattern: Encapsulate Requests as Objects

Master the Command Pattern to encapsulate requests, enable undo/redo, and decouple sender from receiver. Includes real-world use cases and C#/Python examples.

Tech Buddy
04 Jul, 2025
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Chain of Responsibility Pattern: Passing the Buck Gracefully

Master the Chain of Responsibility Pattern to build flexible pipelines where multiple objects can handle requests. Includes real-world use cases and C#/Python examples.

Tech Buddy
04 Jul, 2025
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Mediator Pattern – Simplifying Complex Object Communication

Use the Mediator Pattern to reduce tight coupling between objects by centralizing communication logic. Includes real-world use cases and C#/Python examples.

Tech Buddy
05 Jul, 2025
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State Pattern – Let Objects Evolve Their Behavior Dynamically

Learn how the State Pattern helps objects change behavior dynamically based on internal state. Includes real-world examples, UML, and C#/Python code.

Tech Buddy
05 Jul, 2025
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Visitor Pattern – Add Behavior Without Changing Classes

Learn how the Visitor Pattern helps you add new operations to existing object structures without modifying their classes. Includes real-world examples, UML, and C#/Python code.

Tech Buddy
05 Jul, 2025
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Template Method Pattern – Define the Algorithm Skeleton

Discover how the Template Method Pattern defines the algorithm skeleton while letting subclasses refine specific steps. Includes real-world examples, UML, and C#/Python code.

Tech Buddy
06 Jul, 2025
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Iterator Pattern – Access Elements Without Exposing Structure

Explore how the Iterator Pattern enables sequential access to elements in a collection without exposing its internal structure. Includes real-world examples, UML, and C#/Python code.

Tech Buddy
06 Jul, 2025
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Memento Pattern – Preserving Object State Without Breaking Encapsulation

Learn how the Memento Pattern captures and restores object state without violating encapsulation. Includes real-world examples, UML, and C#/Python code.

Tech Buddy
06 Jul, 2025
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Interpreter Pattern – Building Expression Evaluators and DSLs

Learn how the Interpreter Pattern helps evaluate expressions and define grammar for simple languages. Includes real-world examples, UML, and C#/Python code.

Tech Buddy
06 Jul, 2025
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Conclusion: Your Design Patterns Journey

Wrap up your design patterns journey with a recap of key concepts, resources for further learning, and how to apply these patterns in real-world projects.

Tech Buddy
07 Jul, 2025
Check your understandings
Quiz: Design Patterns in Practice Quiz
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Test your understanding of design patterns, their applications, and best practices in software development with this quiz. Ideal for developers looking to enhance their design skills.
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Quiz: Design Patterns in Practice Quiz 2
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Test your understanding of design patterns, their applications, and best practices in software development with this quiz. Ideal for developers looking to enhance their design skills.
Start Quiz