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   源码介绍

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Preface xv
Acknowledgments xvii
Introduction 1
Chapter 1: Accustoming Yourself to C   11
Item 1: View C   as a federation of languages. 11
Item 2: Prefer consts, enums, and inlines to #defines. 13
Item 3: Use const whenever possible. 17
Item 4: Make sure that objects are initialized before
they’re used. 26
Chapter 2: Constructors, Destructors, and
Assignment Operators 34
Item 5: Know what functions C   silently writes and calls. 34
Item 6: Explicitly disallow the use of compiler-generated
functions you do not want. 37
Item 7: Declare destructors virtual in polymorphic
base classes. 40
Item 8: Prevent exceptions from leaving destructors. 44
Item 9: Never call virtual functions during construction or
destruction. 48
Item 10: Have assignment operators return a reference to *this. 52
Item 11: Handle assignment to self in operator=. 53
Item 12: Copy all parts of an object. 57
Chapter 3: Resource Management 61
Item 13: Use objects to manage resources. 61
Contents
ptg7544714
xii Contents Effective C  
Item 14: Think carefully about copying behavior in
resource-managing classes. 66
Item 15: Provide access to raw resources in
resource-managing classes. 69
Item 16: Use the same form in corresponding uses of new
and delete. 73
Item 17: Store newed objects in smart pointers in standalone
statements. 75
Chapter 4: Designs and Declarations 78
Item 18: Make interfaces easy to use correctly and hard to
use incorrectly. 78
Item 19: Treat class design as type design. 84
Item 20: Prefer pass-by-reference-to-const to pass-by-value. 86
Item 21: Don’t try to return a reference when you must
return an object. 90
Item 22: Declare data members private. 94
Item 23: Prefer non-member non-friend functions to
member functions. 98
Item 24: Declare non-member functions when type
conversions should apply to all parameters. 102
Item 25: Consider support for a non-throwing swap. 106
Chapter 5: Implementations 113
Item 26: Postpone variable definitions as long as possible. 113
Item 27: Minimize casting. 116
Item 28: Avoid returning “handles” to object internals. 123
Item 29: Strive for exception-safe code. 127
Item 30: Understand the ins and outs of inlining. 134
Item 31: Minimize compilation dependencies between files. 140
Chapter 6: Inheritance and Object-Oriented Design 149
Item 32: Make sure public inheritance models “is-a.” 150
Item 33: Avoid hiding inherited names. 156
Item 34: Differentiate between inheritance of interface and
inheritance of implementation. 161
Item 35: Consider alternatives to virtual functions. 169
Item 36: Never redefine an inherited non-virtual function. 178
ptg7544714
Effective C   Contents xiii
Item 37: Never redefine a function’s inherited default
parameter value. 180
Item 38: Model “has-a” or “is-implemented-in-terms-of”
through composition. 184
Item 39: Use private inheritance judiciously. 187
Item 40: Use multiple inheritance judiciously. 192
Chapter 7: Templates and Generic Programming 199
Item 41: Understand implicit interfaces and compile-time
polymorphism. 199
Item 42: Understand the two meanings of typename. 203
Item 43: Know how to access names in templatized
base classes. 207
Item 44: Factor parameter-independent code out of templates. 212
Item 45: Use member function templates to accept
“all compatible types.” 218
Item 46: Define non-member functions inside templates
when type conversions are desired. 222
Item 47: Use traits classes for information about types. 226
Item 48: Be aware of template metaprogramming. 233
Chapter 8: Customizing new and delete 239
Item 49: Understand the behavior of the new-handler. 240
Item 50: Understand when it makes sense to replace new
and delete. 247
Item 51: Adhere to convention when writing new and delete. 252
Item 52: Write placement delete if you write placement new. 256
Chapter 9: Miscellany 262
Item 53: Pay attention to compiler warnings. 262
Item 54: Familiarize yourself with the standard library,
including TR1. 263
Item 55: Familiarize yourself with Boost. 269
Appendix A: Beyond Effective C   273
Appendix B: Item Mappings Between Second
and Third Editions 277
Index 280
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