Refactoring in the Loop

A catalog explorer for the canonical refactorings and code smells.

Refactorings Smells Reference

Reference

Fowler refactorings organized by chapter.

24 smells

66 refactorings

8 categories

Basic Refactorings

Rename Variable Rename Field Remove Dead Code Replace Magic Literal

Encapsulation

Encapsulate Variable Hide Delegate Remove Middle Man Encapsulate Collection Encapsulate Record Remove Setting Method

Moving Features

Move Function Move Field Extract Class Inline Class

Organizing Data

Replace Primitive with Object Change Reference to Value Change Value to Reference

Simplifying Conditional Logic

Decompose Conditional Consolidate Conditional Expression Replace Nested Conditional with Guard Clauses Replace Conditional with Polymorphism Introduce Special Case Replace Control Flag with Break

Refactoring APIs

Change Function Declaration Introduce Parameter Object Introduce Assertion Separate Query from Modifier Parameterize Function Remove Flag Argument Preserve Whole Object Replace Parameter with Query Replace Query with Parameter Replace Constructor with Factory Function Replace Error Code with Exception Replace Exception with Precheck

Dealing with Inheritance

Pull Up Method Push Down Method Replace Type Code with Subclasses Extract Superclass Collapse Hierarchy Replace Subclass with Delegate Pull Up Constructor Body Pull Up Field Push Down Field Remove Subclass Replace Superclass with Delegate