https://cleancode.dosibridge.com/ Master clean code the easy way — design patterns, code smells, and refactorings explained with real-life stories, diagrams, and lots of code. en https://cleancode.dosibridge.com/articles/behavioral-patterns/chain-of-responsibility/ https://cleancode.dosibridge.com/articles/behavioral-patterns/chain-of-responsibility/ Learn the Chain of Responsibility pattern with a simple school leave application story, easy TypeScript and C# code, diagrams, tables, and practice tasks. behavioral-patterns Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/code-smells/long-method/ https://cleancode.dosibridge.com/articles/code-smells/long-method/ Learn the Long Method code smell with simple stories, TypeScript and C# examples, and step-by-step refactoring using Extract Method. Beginner friendly guide. code-smells Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/creational-patterns/factory-method/ https://cleancode.dosibridge.com/articles/creational-patterns/factory-method/ Learn the Factory Method design pattern with a simple Indian tiffin service story, easy TypeScript and C# code, diagrams, real examples, and practice. creational-patterns Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/extract-method/ https://cleancode.dosibridge.com/articles/refactorings/extract-method/ Learn Extract Method step by step. Pull a messy block out of a long function, give it a clear name, and make your code read like a clean to-do list. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/structural-patterns/adapter/ https://cleancode.dosibridge.com/articles/structural-patterns/adapter/ Learn the Adapter pattern with a simple 3-pin plug and 2-pin socket story. Make old code work with new code without changing either side. Easy examples. structural-patterns Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/behavioral-patterns/command/ https://cleancode.dosibridge.com/articles/behavioral-patterns/command/ Learn the Command pattern through a restaurant order slip story. Simple TypeScript and C# code with undo and redo, diagrams, tables, and practice tasks. behavioral-patterns Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/code-smells/large-class/ https://cleancode.dosibridge.com/articles/code-smells/large-class/ Understand the Large Class code smell — why god classes grow, how to spot low cohesion, and how Extract Class splits them into small, focused classes. code-smells Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/creational-patterns/abstract-factory/ https://cleancode.dosibridge.com/articles/creational-patterns/abstract-factory/ Understand the Abstract Factory design pattern through an Indian wedding catering story, with simple TypeScript and Python code, diagrams, and practice. creational-patterns Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/inline-method/ https://cleancode.dosibridge.com/articles/refactorings/inline-method/ Learn Inline Method step by step. When a tiny method's body is clearer than its name, fold it back into the caller and remove one useless hop from your code. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/structural-patterns/bridge/ https://cleancode.dosibridge.com/articles/structural-patterns/bridge/ Understand the Bridge pattern with a TV and remote story. Split one big class into two parts that grow separately, so you avoid too many extra subclasses. structural-patterns Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/behavioral-patterns/iterator/ https://cleancode.dosibridge.com/articles/behavioral-patterns/iterator/ Learn the Iterator pattern with a railway ticket checker story. Build a custom iterator in TypeScript, use for...of and generators, plus C# IEnumerable. behavioral-patterns Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/code-smells/primitive-obsession/ https://cleancode.dosibridge.com/articles/code-smells/primitive-obsession/ Primitive Obsession explained simply — why plain strings and numbers hide bugs, and how value objects like Money and Address make code safe and clear. code-smells Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/creational-patterns/builder/ https://cleancode.dosibridge.com/articles/creational-patterns/builder/ Learn the Builder design pattern with an Indian tailor shop story, fluent TypeScript and C# code, the telescoping constructor problem, and practice tasks. creational-patterns Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/extract-variable/ https://cleancode.dosibridge.com/articles/refactorings/extract-variable/ Learn Extract Variable step by step. Break one giant, confusing expression into small named parts, just like showing your working in a maths copy. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/structural-patterns/composite/ https://cleancode.dosibridge.com/articles/structural-patterns/composite/ Learn the Composite pattern with boxes inside a courier parcel. Treat one item and a full group the same way, and add totals easily with simple recursion. structural-patterns Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/behavioral-patterns/mediator/ https://cleancode.dosibridge.com/articles/behavioral-patterns/mediator/ Learn the Mediator pattern with an airport control tower story, simple TypeScript and C# code, MediatR examples, diagrams, tables and easy practice tasks. behavioral-patterns Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/code-smells/long-parameter-list/ https://cleancode.dosibridge.com/articles/code-smells/long-parameter-list/ Long Parameter List code smell made simple — why methods with too many arguments cause bugs, and how parameter objects make calls short, clear, and safe. code-smells Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/creational-patterns/prototype/ https://cleancode.dosibridge.com/articles/creational-patterns/prototype/ Learn the Prototype design pattern with a simple wedding card story, easy TypeScript and Python examples, and a clear shallow vs deep copy demo. creational-patterns Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/inline-temp/ https://cleancode.dosibridge.com/articles/refactorings/inline-temp/ Learn the Inline Temp refactoring with a simple rough-paper story, TypeScript and C# examples, safe steps, IDE shortcuts, and when not to inline a variable. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/structural-patterns/decorator/ https://cleancode.dosibridge.com/articles/structural-patterns/decorator/ Learn the Decorator pattern with a simple dosa-toppings story. Wrap objects in layers to add new behaviour at runtime, without making new subclasses. structural-patterns Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/behavioral-patterns/memento/ https://cleancode.dosibridge.com/articles/behavioral-patterns/memento/ Understand the Memento pattern through a video game save point story, with TypeScript and Python undo examples, diagrams, tables and easy practice tasks. behavioral-patterns Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/code-smells/data-clumps/ https://cleancode.dosibridge.com/articles/code-smells/data-clumps/ Data Clumps code smell for beginners — learn to spot groups of values that always travel together and bundle them into one class, like a student ID card. code-smells Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/creational-patterns/singleton/ https://cleancode.dosibridge.com/articles/creational-patterns/singleton/ Understand the Singleton design pattern with a school principal story, simple TypeScript and C# code, thread safety, and why many seniors call it an anti-pattern. creational-patterns Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/replace-temp-with-query/ https://cleancode.dosibridge.com/articles/refactorings/replace-temp-with-query/ Learn Replace Temp with Query with a canteen story, TypeScript and C# examples, and safe steps. Turn local variables into reusable methods, one source of truth. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/structural-patterns/facade/ https://cleancode.dosibridge.com/articles/structural-patterns/facade/ Learn the Facade pattern with a travel agent story. Hide many complicated subsystems behind one simple method so client code stays short and clean. structural-patterns Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/behavioral-patterns/observer/ https://cleancode.dosibridge.com/articles/behavioral-patterns/observer/ Master the Observer pattern with a YouTube subscribe and bell icon story, TypeScript and C# event code, real software uses, diagrams and practice tasks. behavioral-patterns Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/code-smells/switch-statements/ https://cleancode.dosibridge.com/articles/code-smells/switch-statements/ Learn the Switch Statements code smell with a school receptionist story, duplicated switch examples in TypeScript and C#, and the polymorphism cure. code-smells Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/split-temporary-variable/ https://cleancode.dosibridge.com/articles/refactorings/split-temporary-variable/ Learn Split Temporary Variable with a two-buckets story, TypeScript and C# examples, and safe steps. Give every variable one job and one clear, honest name. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/structural-patterns/flyweight/ https://cleancode.dosibridge.com/articles/structural-patterns/flyweight/ Learn the Flyweight pattern with a cricket jersey story. Share the heavy common data between thousands of objects and save huge amounts of memory. structural-patterns Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/behavioral-patterns/state/ https://cleancode.dosibridge.com/articles/behavioral-patterns/state/ Learn the State design pattern with a ceiling fan regulator story, simple TypeScript and C# code, state diagrams, real software examples, and practice. behavioral-patterns Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/code-smells/temporary-field/ https://cleancode.dosibridge.com/articles/code-smells/temporary-field/ Learn the Temporary Field code smell with a school bag story, see null-filled fields in TypeScript and C#, and fix them with Extract Class step by step. code-smells Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/remove-assignments-to-parameters/ https://cleancode.dosibridge.com/articles/refactorings/remove-assignments-to-parameters/ Learn the Remove Assignments to Parameters refactoring with a borrowed notebook story, TypeScript and C# examples, and safe steps for beginners to follow. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/structural-patterns/proxy/ https://cleancode.dosibridge.com/articles/structural-patterns/proxy/ Learn the Proxy pattern with a society watchman story. Put a stand-in with the same interface in front of a real object to control access to it. structural-patterns Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/behavioral-patterns/strategy/ https://cleancode.dosibridge.com/articles/behavioral-patterns/strategy/ Learn the Strategy design pattern with a simple school travel story, easy TypeScript and C# code, runtime swapping, real examples, and practice tasks. behavioral-patterns Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/code-smells/refused-bequest/ https://cleancode.dosibridge.com/articles/code-smells/refused-bequest/ Learn the Refused Bequest code smell with a family sweet shop story, Liskov violations in TypeScript and C#, and the delegation cure explained step by step. code-smells Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/replace-method-with-method-object/ https://cleancode.dosibridge.com/articles/refactorings/replace-method-with-method-object/ Learn Replace Method with Method Object through a wedding kitchen story, TypeScript and C# examples, and safe steps to untangle long methods for beginners. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/behavioral-patterns/template-method/ https://cleancode.dosibridge.com/articles/behavioral-patterns/template-method/ Learn the Template Method design pattern with a chai and coffee story, easy TypeScript and C# code, hooks, diagrams, real examples, and practice tasks. behavioral-patterns Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/code-smells/alternative-classes-with-different-interfaces/ https://cleancode.dosibridge.com/articles/code-smells/alternative-classes-with-different-interfaces/ Learn this code smell with a tiffin delivery story: two classes do the same job with different method names, so you cannot swap them. Fix it step by step. code-smells Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/substitute-algorithm/ https://cleancode.dosibridge.com/articles/refactorings/substitute-algorithm/ Learn the Substitute Algorithm refactoring with a cycle-route story, TypeScript and Python examples, and the test-first safety rules every beginner needs. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/behavioral-patterns/visitor/ https://cleancode.dosibridge.com/articles/behavioral-patterns/visitor/ Learn the Visitor design pattern with a school health check-up story, double dispatch made simple, TypeScript and C# code, real examples, and practice. behavioral-patterns Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/code-smells/divergent-change/ https://cleancode.dosibridge.com/articles/code-smells/divergent-change/ Learn the Divergent Change code smell with a school clerk story, simple definitions, TypeScript and C# examples, a clear comparison with Shotgun Surgery, and practice. code-smells Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/move-method/ https://cleancode.dosibridge.com/articles/refactorings/move-method/ Learn the Move Method refactoring through a simple school story. Shift a method into the class whose data it uses most so behaviour and data stay together. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/code-smells/shotgun-surgery/ https://cleancode.dosibridge.com/articles/code-smells/shotgun-surgery/ Learn the Shotgun Surgery code smell with an address-change story, simple definitions, TypeScript and C# examples, a clear comparison with Divergent Change, and practice. code-smells Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/move-field/ https://cleancode.dosibridge.com/articles/refactorings/move-field/ Learn the Move Field refactoring with an easy school story. Move a piece of data to the class that really uses it, so state and behaviour live side by side. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/code-smells/parallel-inheritance-hierarchies/ https://cleancode.dosibridge.com/articles/code-smells/parallel-inheritance-hierarchies/ Learn the Parallel Inheritance Hierarchies code smell with a sweet-shop story, mirrored class trees explained simply, TypeScript and C# examples, fixes, and practice. code-smells Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/extract-class/ https://cleancode.dosibridge.com/articles/refactorings/extract-class/ Learn the Extract Class refactoring with a fun school office story. Split one overloaded class into two focused classes, each with a single clear job to do. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/code-smells/comments/ https://cleancode.dosibridge.com/articles/code-smells/comments/ Learn why too many comments can be a code smell. Understand good WHY comments vs bad WHAT comments with a sticky-note cupboard story and easy examples. code-smells Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/inline-class/ https://cleancode.dosibridge.com/articles/refactorings/inline-class/ Learn the Inline Class refactoring through a school committee story. Merge a class that does too little back into its user and remove useless indirection. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/code-smells/duplicate-code/ https://cleancode.dosibridge.com/articles/code-smells/duplicate-code/ Learn the Duplicate Code smell with a wedding card story. Understand DRY, the Rule of Three, and how Extract Method removes dangerous copy-paste code. code-smells Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/hide-delegate/ https://cleancode.dosibridge.com/articles/refactorings/hide-delegate/ Learn the Hide Delegate refactoring with a story about a class monitor who finds your homework for you. Stop writing chains like employee.department.manager — give the first object a simple method and hide the journey inside it. Step-by-step TypeScript and C# examples included. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/code-smells/lazy-class/ https://cleancode.dosibridge.com/articles/code-smells/lazy-class/ Learn the Lazy Class code smell with a society watchman story. Find classes that do too little to deserve existing, and cure them with Inline Class. code-smells Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/remove-middle-man/ https://cleancode.dosibridge.com/articles/refactorings/remove-middle-man/ Learn the Remove Middle Man refactoring with a story about a school peon who forwards every question to the principal without adding anything. When a class only forwards calls to its delegate, delete the forwarding and let clients talk to the delegate directly. Step-by-step TypeScript and C# walkthrough. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/code-smells/data-class/ https://cleancode.dosibridge.com/articles/code-smells/data-class/ Learn the Data Class smell with a society register story. See why data without behavior breaks encapsulation, and when DTOs and records are perfectly fine. code-smells Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/introduce-foreign-method/ https://cleancode.dosibridge.com/articles/refactorings/introduce-foreign-method/ Learn the Introduce Foreign Method refactoring with a story about a school photocopy machine that has no stapler. When a class you cannot modify is missing a method, write that method in your own class with the foreign object as a parameter. TypeScript and modern C# extension-method examples included. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/code-smells/dead-code/ https://cleancode.dosibridge.com/articles/code-smells/dead-code/ Learn the Dead Code smell with a storeroom full of unused furniture. See why unreachable code costs real money, with the Knight Capital story and easy fixes. code-smells Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/introduce-local-extension/ https://cleancode.dosibridge.com/articles/refactorings/introduce-local-extension/ Learn the Introduce Local Extension refactoring with a story about building an attached cabin beside a rented shop you cannot modify. When a locked class is missing many methods, gather them into one extension type — a subclass, a wrapper, or a modern C#/Kotlin extension class. Full TypeScript and C# walkthrough. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/code-smells/speculative-generality/ https://cleancode.dosibridge.com/articles/code-smells/speculative-generality/ Learn the Speculative Generality smell with a house-building story. Understand YAGNI, why guessing future needs backfires, and how to collapse unused abstractions. code-smells Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/self-encapsulate-field/ https://cleancode.dosibridge.com/articles/refactorings/self-encapsulate-field/ Self Encapsulate Field explained simply — why a class should read and write its own fields through getters and setters, with safe steps, TypeScript and C# examples. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/code-smells/feature-envy/ https://cleancode.dosibridge.com/articles/code-smells/feature-envy/ Learn the Feature Envy code smell with a simple school story. When a method keeps using another class's data more than its own, it probably belongs in that other class. Cure it with Move Method. code-smells Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/replace-data-value-with-object/ https://cleancode.dosibridge.com/articles/refactorings/replace-data-value-with-object/ Replace Data Value with Object explained simply — how to grow a plain string or number into a small class with validation and behaviour, with TypeScript and C# record examples. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/code-smells/inappropriate-intimacy/ https://cleancode.dosibridge.com/articles/code-smells/inappropriate-intimacy/ Learn the Inappropriate Intimacy code smell with a story of two neighbours who rearrange each other's kitchens. When two classes poke each other's private parts, neither can change alone. Learn the Law of Demeter and the refactorings that restore privacy. code-smells Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/change-value-to-reference/ https://cleancode.dosibridge.com/articles/refactorings/change-value-to-reference/ Change Value to Reference explained simply — why duplicate copies of the same entity go stale, and how a shared single instance via a registry or repository keeps data consistent. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/code-smells/message-chains/ https://cleancode.dosibridge.com/articles/code-smells/message-chains/ Learn the Message Chains code smell with a story about finding out if bread is available — through four people. When code reads a.getB().getC().getD(), the caller is coupled to a whole path. Learn the Law of Demeter and cure chains with Hide Delegate. code-smells Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/change-reference-to-value/ https://cleancode.dosibridge.com/articles/refactorings/change-reference-to-value/ Change Reference to Value explained simply — how to turn a shared, mutable reference object into a small immutable value object with content-based equality, with TypeScript and C# record examples. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/code-smells/middle-man/ https://cleancode.dosibridge.com/articles/code-smells/middle-man/ Learn the Middle Man code smell with a story of a school helper who only carries messages without adding anything. When a class merely forwards every call, remove it — but learn why Proxy, Facade, and Adapter are middle men ON PURPOSE. code-smells Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/replace-array-with-object/ https://cleancode.dosibridge.com/articles/refactorings/replace-array-with-object/ Replace Array with Object explained simply — why an array with secret positions like row[0], row[1], row[2] causes bugs, and how a class with named fields makes the code honest and safe. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/encapsulate-field/ https://cleancode.dosibridge.com/articles/refactorings/encapsulate-field/ Encapsulate Field explained simply — why public fields let any code corrupt an object's data, and how private fields with getters and setters put the object back in charge. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/encapsulate-collection/ https://cleancode.dosibridge.com/articles/refactorings/encapsulate-collection/ Encapsulate Collection explained simply — why returning a live array or list lets any caller corrupt your object, and how read-only views plus add/remove methods restore control. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/replace-type-code-with-class/ https://cleancode.dosibridge.com/articles/refactorings/replace-type-code-with-class/ Learn the Replace Type Code with Class refactoring with a school house story, before/after TypeScript, C# smart enums, and a clear guide on when to pick Class, Subclasses, or State/Strategy. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/replace-type-code-with-subclasses/ https://cleancode.dosibridge.com/articles/refactorings/replace-type-code-with-subclasses/ Learn the Replace Type Code with Subclasses refactoring with a day-scholar/boarder/hosteller story, switch-removal in TypeScript and C#, and the decision guide for Class vs Subclasses vs State/Strategy. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/replace-type-code-with-state-strategy/ https://cleancode.dosibridge.com/articles/refactorings/replace-type-code-with-state-strategy/ Learn the Replace Type Code with State/Strategy refactoring with a prepaid-to-postpaid SIM story, swappable plan objects in TypeScript and C#, and the decision guide for Class vs Subclasses vs State/Strategy. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/decompose-conditional/ https://cleancode.dosibridge.com/articles/refactorings/decompose-conditional/ Learn the Decompose Conditional refactoring with a school circular story, simple TypeScript and C# examples, safe steps, and handy IDE shortcuts for beginners. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/consolidate-conditional-expression/ https://cleancode.dosibridge.com/articles/refactorings/consolidate-conditional-expression/ Learn the Consolidate Conditional Expression refactoring with a school-gate story, TypeScript and C# examples, safe steps, and the side-effect rule beginners must know. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/consolidate-duplicate-conditional-fragments/ https://cleancode.dosibridge.com/articles/refactorings/consolidate-duplicate-conditional-fragments/ Learn the Consolidate Duplicate Conditional Fragments refactoring with a canteen story, TypeScript and C# examples, safety rules, and easy step-by-step practice. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/remove-control-flag/ https://cleancode.dosibridge.com/articles/refactorings/remove-control-flag/ Learn the Remove Control Flag refactoring with a watchman story, TypeScript and C# examples, break and return steps, plus the single-exit debate explained simply. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/replace-nested-conditional-with-guard-clauses/ https://cleancode.dosibridge.com/articles/refactorings/replace-nested-conditional-with-guard-clauses/ Learn the Replace Nested Conditional with Guard Clauses refactoring with a temple queue story, early returns that flatten arrow-shaped code, and safe step-by-step mechanics in TypeScript and C#. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/replace-conditional-with-polymorphism/ https://cleancode.dosibridge.com/articles/refactorings/replace-conditional-with-polymorphism/ Learn the Replace Conditional with Polymorphism refactoring with a school reception story, repeated type switches dissolving into subclasses, a factory in TypeScript and C#, and honest advice on when a plain switch is fine. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/introduce-null-object/ https://cleancode.dosibridge.com/articles/refactorings/introduce-null-object/ Learn the Introduce Null Object refactoring with a school guardian-card story, Tony Hoare's billion-dollar mistake, scattered null checks replaced by one well-behaved default object, and honest advice on when null objects hide bugs. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/introduce-assertion/ https://cleancode.dosibridge.com/articles/refactorings/introduce-assertion/ Learn the Introduce Assertion refactoring with a careful cook's story, hidden assumptions turned into executable checks, Debug.Assert in C# and asserts functions in TypeScript, and the crucial difference between assertions and input validation. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/rename-method/ https://cleancode.dosibridge.com/articles/refactorings/rename-method/ Rename Method explained simply — why a method's name must say what the method really does, how to rename safely with a delegating old method, and how IDEs like VS Code (F2) and JetBrains (Shift+F6) make it a one-key job. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/add-parameter/ https://cleancode.dosibridge.com/articles/refactorings/add-parameter/ Add Parameter explained simply — how to give a method a new piece of information it now needs, why an explicit parameter beats hidden global state, how to do it safely with overloads, and when to stop before the parameter list grows too long. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/remove-parameter/ https://cleancode.dosibridge.com/articles/refactorings/remove-parameter/ Remove Parameter explained simply — how to safely delete a parameter the method no longer uses, why dead parameters mislead readers and burden every caller, and the checks (interfaces, overrides, reflection) you must do before deleting. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/separate-query-from-modifier/ https://cleancode.dosibridge.com/articles/refactorings/separate-query-from-modifier/ Separate Query from Modifier explained simply — split a method that both answers a question and changes state into a pure query and a separate command, following Bertrand Meyer's Command-Query Separation principle: asking a question should not change the answer. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/parameterize-method/ https://cleancode.dosibridge.com/articles/refactorings/parameterize-method/ Learn the Parameterize Method refactoring with a juice stall story, TypeScript and C# examples, safe step-by-step mechanics, and the seesaw rule that pairs it with Replace Parameter with Explicit Methods. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/replace-parameter-with-explicit-methods/ https://cleancode.dosibridge.com/articles/refactorings/replace-parameter-with-explicit-methods/ Learn the Replace Parameter with Explicit Methods refactoring with a bank counter story, TypeScript and Python examples, safe mechanics, and the seesaw rule that pairs it with Parameterize Method. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/preserve-whole-object/ https://cleancode.dosibridge.com/articles/refactorings/preserve-whole-object/ Learn the Preserve Whole Object refactoring with a school ID card story, TypeScript and C# examples, safe step-by-step mechanics, and an honest look at the coupling cost of passing whole objects. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/replace-parameter-with-method-call/ https://cleancode.dosibridge.com/articles/refactorings/replace-parameter-with-method-call/ Learn the Replace Parameter with Method Call refactoring (Replace Parameter with Query in Fowler's 2nd edition) with a kirana shop story, TypeScript and C# examples, safe mechanics, and the testability fine print. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/introduce-parameter-object/ https://cleancode.dosibridge.com/articles/refactorings/introduce-parameter-object/ Introduce Parameter Object explained simply — why the same group of parameters travelling together through many methods is a hidden concept, and how bundling them into one named object shortens signatures, stops order mistakes, and attracts behaviour. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/remove-setting-method/ https://cleancode.dosibridge.com/articles/refactorings/remove-setting-method/ Remove Setting Method explained simply — why a field that should never change after construction must not have a setter, and how read-only fields, init-only properties, and records turn 'please don't change this' into a compiler guarantee. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/hide-method/ https://cleancode.dosibridge.com/articles/refactorings/hide-method/ Hide Method explained simply — why a method that only the class itself uses should not sit on the public menu, and how lowering visibility to private or internal shrinks the API, protects internals, and frees you to change code without fear. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/replace-constructor-with-factory-method/ https://cleancode.dosibridge.com/articles/refactorings/replace-constructor-with-factory-method/ Learn the Replace Constructor with Factory Method refactoring with a thali restaurant story, before/after TypeScript and C#, safe step-by-step migration, and a clear comparison with the full Factory Method design pattern. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/replace-error-code-with-exception/ https://cleancode.dosibridge.com/articles/refactorings/replace-error-code-with-exception/ Learn the Replace Error Code with Exception refactoring with a government-office story, before/after TypeScript and C#, safe migration steps, and an honest comparison with Result types as the modern third way. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/replace-exception-with-test/ https://cleancode.dosibridge.com/articles/refactorings/replace-exception-with-test/ Learn the Replace Exception with Test refactoring (Replace Exception with Precheck) with a canteen story, before/after TypeScript and C#, TryParse-style patterns, the check-then-act race-condition trap, and Result types as the modern third way. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/pull-up-field/ https://cleancode.dosibridge.com/articles/refactorings/pull-up-field/ Learn the Pull Up Field refactoring with a school notice-board story — move a field that every subclass duplicates into the superclass, with safe steps in TypeScript and C#, IDE support, and the pull-up vs push-down direction guide. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/pull-up-method/ https://cleancode.dosibridge.com/articles/refactorings/pull-up-method/ Learn the Pull Up Method refactoring with a school leave-application story — move methods duplicated across subclasses into the superclass, with safe steps in TypeScript and C#, IDE dialogs, and when to choose Form Template Method instead. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/pull-up-constructor-body/ https://cleancode.dosibridge.com/articles/refactorings/pull-up-constructor-body/ Learn the Pull Up Constructor Body refactoring with a school morning-assembly story — move duplicated initialization from subclass constructors into a superclass constructor called via super/base, with safe steps in TypeScript and C#. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/push-down-field/ https://cleancode.dosibridge.com/articles/refactorings/push-down-field/ Learn the Push Down Field refactoring with a school notice-board story — move a superclass field that only some subclasses use down into exactly those subclasses, with safe steps in TypeScript and C#, IDE dialogs, and the pull-up vs push-down compass. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/push-down-method/ https://cleancode.dosibridge.com/articles/refactorings/push-down-method/ Learn the Push Down Method refactoring with a school-office story, honest superclass contracts, safe step-by-step moves in TypeScript and C#, and how it cures the Refused Bequest smell. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/extract-subclass/ https://cleancode.dosibridge.com/articles/refactorings/extract-subclass/ Learn the Extract Subclass refactoring with a tailor-shop story about urgent orders, flag-removal in TypeScript and C#, safe step-by-step moves, and when subclassing is the wrong tool. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/extract-superclass/ https://cleancode.dosibridge.com/articles/refactorings/extract-superclass/ Learn the Extract Superclass refactoring with a science-lab/computer-lab story, pull-up moves in TypeScript and C#, the superclass-vs-interface decision table, and how it removes Duplicate Code. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/extract-interface/ https://cleancode.dosibridge.com/articles/refactorings/extract-interface/ Learn the Extract Interface refactoring with a visitor-register story about an electrician and a plumber, contract-extraction in TypeScript and C#, test doubles, and the interface-vs-superclass decision table. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/collapse-hierarchy/ https://cleancode.dosibridge.com/articles/refactorings/collapse-hierarchy/ Learn the Collapse Hierarchy refactoring with a housing-society committee story, step-by-step merging of a superclass and subclass in TypeScript and C#, and the checks that tell you when a hierarchy has stopped earning its keep. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/form-template-method/ https://cleancode.dosibridge.com/articles/refactorings/form-template-method/ Learn the Form Template Method refactoring with a two-aunties biryani story, step-by-step extraction of a shared algorithm skeleton in TypeScript and Python, and how this refactoring produces the Template Method design pattern. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/replace-inheritance-with-delegation/ https://cleancode.dosibridge.com/articles/refactorings/replace-inheritance-with-delegation/ Learn the Replace Inheritance with Delegation refactoring with a sweet-shop inheritance story, the honest meaning of composition over inheritance, the fragile base class problem, and step-by-step conversion in TypeScript and C#. refactorings Thu, 11 Jun 2026 00:00:00 GMT https://cleancode.dosibridge.com/articles/refactorings/replace-delegation-with-inheritance/ https://cleancode.dosibridge.com/articles/refactorings/replace-delegation-with-inheritance/ Learn the Replace Delegation with Inheritance refactoring with a tailor-shop helper story, the Middle Man smell, the strict is-a conditions that must hold first, and step-by-step conversion in TypeScript and C#. refactorings Thu, 11 Jun 2026 00:00:00 GMT