For Dummies C++, 6th Edition 978-0-470-31726-6 用户手册

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Constructing Class Members ..................................................................... 224

Constructing a complex data member ............................................ 224
Constructing a constant data member ........................................... 228

Reconstructing the Order of Construction .............................................. 229

Local objects construct in order ..................................................... 229
Static objects construct only once .................................................. 230
All global objects construct before main()..................................... 231
Global objects construct in no particular order ............................ 231
Members construct in the order in which they are declared ...... 233
Destructors destruct in the reverse order of the constructors... 233

Constructors as a Form of Conversion ..................................................... 233

Copying an Object ....................................................................................... 235

Why you need the copy constructor ............................................... 236
Using the copy constructor .............................................................. 236

The Automatic Copy Constructor ............................................................. 238
Creating Shallow Copies versus Deep Copies .......................................... 240
It’s a Long Way to Temporaries ................................................................. 244

Avoiding temporaries, permanently................................................ 246

Defi ning a Static Member ............................................................................ 247

Why you need static members ......................................................... 247
Using static members ........................................................................ 248
Referencing static data members .................................................... 249
Uses for static data members ........................................................... 250

Declaring Static Member Functions .......................................................... 251
What Is This About Anyway? ..................................................................... 253

Part IV: Inheritance .................................................. 255

Do I Need My Inheritance? ......................................................................... 258
How Does a Class Inherit? .......................................................................... 259

Using a subclass ................................................................................. 261
Constructing a subclass .................................................................... 262
Destructing a subclass ...................................................................... 263

Having a HAS_A Relationship ..................................................................... 263

Why You Need Polymorphism ................................................................... 268
How Polymorphism Works ......................................................................... 269
When Is a Virtual Function Not? ................................................................ 270
Considering Virtual Considerations .......................................................... 271