Martin Fowler - Refactoring: Improving the Design of Existing Code

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Change Function Declaration ()

Change Reference to Value ()

Change Value to Reference ()

Collapse Hierarchy ()

Combine Functions into Class ()

Combine Functions into Transform ()

Consolidate Conditional Expression ()

Decompose Conditional ()

Encapsulate Collection ()

Encapsulate Record ()

Encapsulate Variable ()

Extract Class ()

Extract Function ()

Extract Superclass ()

Extract Variable ()

Hide Delegate ()

Inline Class ()

Inline Function ()

Inline Variable ()

Introduce Assertion ()

Introduce Parameter Object ()

Introduce Special Case ()

Move Field ()

Move Function ()

Move Statements into Function ()

Move Statements to Callers ()

Parameterize Function ()

Preserve Whole Object ()

Pull Up Constructor Body ()

Pull Up Field ()

Pull Up Method ()

Push Down Field ()

Push Down Method ()

Remove Dead Code ()

Remove Flag Argument ()

Remove Middle Man ()

Remove Setting Method ()

Remove Subclass ()

Rename Field ()

Rename Variable ()

Replace Command with Function ()

Replace Conditional with Polymorphism ()

Replace Constructor with Factory Function ()

Replace Derived Variable with Query ()

Replace Function with Command ()

Replace Inline Code with Function Call ()

Replace Loop with Pipeline ()

Replace Nested Conditional with Guard Clauses ()

Replace Parameter with Query ()

Replace Primitive with Object ()

Replace Query with Parameter ()

Replace Subclass with Delegate ()

Replace Superclass with Delegate ()

Replace Temp with Query ()

Replace Type Code with Subclasses ()

Separate Query from Modifier ()

Slide Statements ()

Split Loop ()

Split Phase ()

Split Variable ()

Substitute Algorithm ()

Improving the Design of Existing Code

Second Edition

Martin Fowler

with contributions by
Kent Beck

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