原创 codecomplexity
// 1.invokes the Employee copy constructor. This copy operation might throw an exception String EvaluateSalaryAndRetur
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原创 writing exception cod2
template<class T> class Stack { public: Stack(); ~Stack(); Stack(const Stack& other); Stack& operator=(const Stack
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原创 Writing Exception Code
template<class T> class Stack { public: Stack(); ~Stack(); Stack(const Stack& other); Stack& operator=(const Stack
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原创 NameLookupAndInterfacePrinciple1
namespace A { struct X; struct Y; void f( int ); void g( X ); } namespace B { void f( int i ) { f( i
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原创 Maximally Reusable Generic Containers
template<typename T, size_t size> class fixed_vector { public: typedef T* iterator; typedef const T* const_iterato
2020-06-27 10:24:24
原创 static 的作用
對於一個完整的程序，在內存中的分佈情況如下圖： 代碼區 //low address 全局數據區 堆區 棧區 //high address 1、全局變量和全局靜態變量的區別， example： #include <iost
2020-02-21 16:38:19
原创 The "Fast Pimpl" Idiom
// file y.h class X; class Y { /*...*/ X* px_; }; // file y.cpp #include "x.h" Y::Y() : px_( new X ) {} Y::~Y(
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原创 Temporary Objects
string FindAddr(list<Employee> emps, string name) // const &, string& dangerous. { // for most containers, calling end
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原创 Minimizing Compile-time Dependencies 1
// x.h: original header // #include <iostream> // remove, unnecessary #include <ostream> // std, typedef. it can
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原创 Uses And Abuses of Inheritance
Use inheritance wisely. If you can express a class relationship using containment/delegation alone, you should always p
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原创 classrelationships1
class BasicProtocol /* : possible base classes */ // MessageCreator or MessageHelper. { public: BasicProtocol();
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原创 NameLookupAndInterfacePrinciple2
//*** Example 5 (a) -- nonvirtual streaming class X { /*...ostream is never mentioned here...*/ }; ostream& operato
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原创 Case-Insensitive
/* ci_string s( "AbCdE" ); // case insensitive // assert( s == "abcde" ); assert( s == "ABCDE" ); // still case-pr
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原创 NameLookup4
// Example 2: Will this compile? // // In some library header: namespace N { class C {}; } int operator+(int i, N::C)
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原创 overring virtual functions
#include <iostream> #include <complex> using namespace std; class Base { public: virtual void f( int ); virtual
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