README

Code examples from Delphi Memory Management for Classic and ARC Compilers Book

[https://igoto.co/DelphiMM](https://igoto.co/DelphiMM)

[https://dalija.prasnikar.info](https://dalija.prasnikar.info)

Part 1. Memory management basics and terminology

Chapter 3. Variables and types

• 3.3.1 Wild reference

  Wild.dpr

  WildWorking.dpr

• 3.3.2 Dangling reference

  Dangling.dpr

• 3.3.3 Stale reference

  Stale.dpr

• 3.4 Scope and lifetime

  Scope1.dpr

  Scope2.dpr

  Scope3.dpr

Chapter 4. Classes

• 4.3.2 Self

  uShip.pas

• 4.3.3 inherited

  uQuestion.pas

  PrintTest.dpr

• 4.4.1 Static binding

  StaticBinding.dpr

• 4.4.4 Method overriding (Dynamic binding)

  DynamicHidding.dpr

  DynamicOverriding.dpr

• 4.4.8 The differences between overriding, hiding, or doing nothing with a virtual method

  Differences.dpr

• 4.4.9 Method overloading

  Overloading1.dpr

  Overloading2.dpr

• 4.4.10 Class methods

  Classy.dpr

Part 2. Object instances

Chapter 5. To be, or not to be

• 5.1.4 Nil exception

  NilException.dpr

• 5.1.5 How to test for nil

  AssignedCheck.dpr

  NilComparison.dpr

  NilComparisonFunc.dpr

• 5.3.1 A use case for null object

  NullObjectPattern.dpr

• 5.3.2 A case against null object

  TreeNil.dpr

  TreeNullObject.dpr

  TreeNullObjectSingle.dpr

• 5.4 Nullable types

  Following nullable implementation is based on Allen Bauer's blog post "A Nullable Post" https://blog.therealoracleatdelphi.com/2008/09/a-post_18.html

  Nullable.pas

  Weather.dpr

Chapter 6, 7, 8

...

Part 3. Manual memory management

...

Part 4. Automatic Reference Counting

...

Part 5. Coding patterns

• 17.6 Smart Pointers

  Smart.dpr + uLifeMgr.pas + uSmartPrt.pas

• 17.7 Lazy

  LazyDeathStar.dpr

  ReallyLazyDeathStar.dpr

• 17.8 Weak

  WeakMagic.dpr + uZWeak.pas

  SimplerWeakMagic.dpr + uZWeak.pas