Changes for 2nd Edition of Refactoring

Fate of the refactorings in the first edition name page fate replacement Add Parameter 275 replaced ➜ Change Function Declaration Change Bidirectional Association to Unidirectional 200 absent Change Reference to Value 183 kept Change Unidirectional Association to Bidirectional 197 absent Change Value to Reference 179 kept Collapse Hierarchy 344 kept Consolidate Conditional Expression 240 kept Consolidate Duplicate Conditional Fragments 243 replaced ➜ Slide Statements Decompose Conditional 238 kept Duplicate Observed Data 189 absent Encapsulate Collection 208 kept Encapsulate Downcast 308 absent Encapsulate Field 206 replaced ➜ Encapsulate Variable Extract Class 149 kept Extract Interface 341 absent Extract Method 110 replaced ➜ Extract Function Extract Subclass 330 replaced ➜ Replace Type Code with Subclasses Extract Superclass 336 kept Extract Variable 124 kept Form Template Method 345 absent Hide Delegate 157 kept Hide Method 303 absent Inline Class 154 kept Inline Method 117 replaced ➜ Inline Function Inline Temp 119 replaced ➜ Inline Variable Introduce Assertion 267 kept Introduce Foreign Method 162 absent Introduce Local Extension 164 absent Introduce Null Object 260 replaced ➜ Introduce Special Case Introduce Parameter Object 295 kept Move Field 146 kept Move Method 142 replaced ➜ Move Function Parameterize Method 283 replaced ➜ Parameterize Function Preserve Whole Object 288 kept Pull Up Constructor Body 325 kept Pull Up Field 320 kept Pull Up Method 322 kept Push Down Field 329 kept Push Down Method 328 kept Remove Assignments to Parameters 131 replaced ➜ Split Variable Remove Control Flag 245 replaced† ➜ Replace Control Flag with Break Remove Middle Man 160 kept Remove Parameter 277 replaced ➜ Change Function Declaration Remove Setting Method 300 kept Rename Method 273 replaced ➜ Change Function Declaration Replace Array with Object 186 absent Replace Conditional with Polymorphism 255 kept Replace Constructor with Factory Method 304 replaced ➜ Replace Constructor with Factory Function Replace Data Value with Object 175 replaced ➜ Replace Primitive with Object Replace Delegation with Inheritance 355 absent Replace Error Code with Exception 310 kept† Replace Exception with Test 315 replaced† ➜ Replace Exception with Precheck Replace Inheritance with Delegation 352 replaced ➜ Replace Superclass with Delegate Replace Magic Number with Symbolic Constant 204 replaced† ➜ Replace Magic Literal Replace Method with Method Object 135 replaced ➜ Replace Function with Command Replace Nested Conditional with Guard Clauses 250 kept Replace Parameter with Explicit Methods 285 replaced ➜ Remove Flag Argument Replace Parameter with Method 292 replaced ➜ Replace Parameter with Query Replace Record with Data Class 217 replaced ➜ Encapsulate Record Replace Subclass with Fields 232 replaced ➜ Remove Subclass Replace Temp with Query 120 kept Replace Type Code with Class 218 replaced ➜ Replace Primitive with Object Replace Type Code with State/Strategy 227 replaced ➜ Replace Type Code with Subclasses Replace Type Code with Subclasses 223 kept Self Encapsulate Field 171 replaced ➜ Encapsulate Variable Separate Query from Modifier 279 kept Split Temporary Variable 128 replaced ➜ Split Variable Substitute Algorithm 139 kept

† web edition only