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“如何修复”&书信电报;哈希映射>;已弃用,将被删除。请使用<;无序地图>&引用;? 我学习C++,所以我正在通过编程:使用C++的原理和实践。_C++_Visual Studio 2015 - Fatal编程技术网

“如何修复”&书信电报;哈希映射>;已弃用,将被删除。请使用<;无序地图>&引用;? 我学习C++,所以我正在通过编程:使用C++的原理和实践。

“如何修复”&书信电报;哈希映射>;已弃用,将被删除。请使用<;无序地图>&引用;? 我学习C++,所以我正在通过编程:使用C++的原理和实践。,c++,visual-studio-2015,C++,Visual Studio 2015,我正在进行第一个练习,这是如何做一个“你好,世界!”使用Microsoft Visual Studio 2015的程序。我使用了书中提供的源代码 #include "../../std_lib_facilities.h" //header file recommended by book int main() //C++ programs start by executing the function main { cout &l

我正在进行第一个练习,这是如何做一个“你好,世界!”使用Microsoft Visual Studio 2015的程序。我使用了书中提供的源代码

#include "../../std_lib_facilities.h"  //header file recommended by book
int main()                             //C++ programs start by executing the function main
{
    cout <<"Hello, World!\n";   //output "Hello, World!"
    keep_window_open();         //wait for a character to be entered
    return 0;
}
#包括本书推荐的“../../std_lib_facilities.h”//header文件
int main()//C++程序从执行main函数开始
{

有几种方法可以修复它。您可以让编译器在visual studio中通过编写

#定义(静默)索引(散列)弃用(警告1)

在他的头文件的顶部(在本系列的其余部分中,您可能会感觉良好)

你也可以将他的头重写为,而不是使用
hash\u-map
use
unordered\u-map
。我不建议这样做,因为你是编程新手,但某种类型的灵魂堆栈溢出可能会帮你做到这一点,你可以复制它(应该一点也不难)。 编辑:T.C.在你文章的评论部分找到了它


最后,你可以在书中为你正在做的任何单元包含必要的头文件,并根据你的需要手动编写他正在使用的任何函数。在这种情况下,要访问cout函数,你需要在文件顶部写
#include
,然后在之前使用命名空间std;
编写
ode>int main()
。或者,您可以编写
std::cout我认为解决OP特定问题的最佳解决方案是下载更新版本的
std_lib_facilities.h
。新文件使用
unordered_map
而不是
hash_map
您可以在源文件中键入以下内容

#include<iostream>
#include<string>
#include<vector>
#include<algorithm>
#include<cmath>
using namespace std;
inline void keep_window_open() { char ch; cin >> ch; }
#包括
#包括
#包括
#包括
#包括
使用名称空间std;
内联void保持窗口打开({char ch;cin>>ch;}

或者使用这些文件创建头文件。

如果您正在使用本书的第二版(您应该),使用标题。如果必须使用第一版,请在
\include
之前添加
\define\u SILENCE\u STDEXT\u HASH\u DEPRECATION\u警告
请使用
这本书非常明确。如果你不担心学习过时的编程技术,你的书很旧,找一本更好的,或者继续读下去。你可以不用担心,它也不会教你关于C++11的任何东西。那不好。仅供参考(在Quora上);它看起来像是因为功能被移动到了标准库而贬值了,但还有其他原因吗?旧的标准前代码呢?为什么要为此破坏向后兼容性?无序的_映射非常接近于直接替换哈希_映射。一个简单的搜索和替换应该可以。@Puppye是一个
#定义无序的(u-map hash)映射
,这样做可能非常容易
/*
    simple "Programming: Principles and Practice using C++" course header to
    be used for the first few weeks.
    It provides the most common standard headers (in the global namespace)
    and minimal exception/error support.

    Students: please don't try to understand the details of headers just yet.
    All will be explained. This header is primarily used so that you don't     have
    to understand every concept all at once.

    Revised April 25, 2010: simple_error() added
*/

#ifndef H112
#define H112 201004L

#include<iostream>
#include<fstream>
#include<sstream>
#include<cmath>
#include<cstdlib>
#include<string>
#include<list>
#include<vector>
#include<algorithm>
#include<stdexcept>

//---------------------------------------------------------------------------    ---

#ifdef _MSC_VER
#include <hash_map>
using stdext::hash_map;
#else
#include <ext/hash_map>
using __gnu_cxx::hash_map;

namespace __gnu_cxx {

    template<> struct hash<std::string>
    {
        size_t operator()(const std::string& s) const
        {
            return hash<char*>()(s.c_str());
        }
    };

} // of namespace __gnu_cxx
#endif

//---------------------------------------------------------------------------    ---

#define unordered_map hash_map

//---------------------------------------------------------------------------    ---

typedef long Unicode;

//---------------------------------------------------------------------------    ---

using namespace std;

 template<class T> string to_string(const T& t)
{
    ostringstream os;
    os << t;
    return os.str();
}

struct Range_error : out_of_range { // enhanced vector range error reporting
    int index;
    Range_error(int i) :out_of_range("Range error: "+to_string(i)), index(i)     { }
};


// trivially range-checked vector (no iterator checking):
template< class T> struct Vector : public std::vector<T> {
    typedef typename std::vector<T>::size_type size_type;

    Vector() { }
    explicit Vector(size_type n) :std::vector<T>(n) {}
    Vector(size_type n, const T& v) :std::vector<T>(n,v) {}
    template <class I>
    Vector(I first, I last) :std::vector<T>(first,last) {}

    T& operator[](unsigned int i) // rather than return at(i);
    {
        if (i<0||this->size()<=i) throw Range_error(i);
        return std::vector<T>::operator[](i);
    }
    const T& operator[](unsigned int i) const
    {
        if (i<0||this->size()<=i) throw Range_error(i);
        return std::vector<T>::operator[](i);
    }
};

// disgusting macro hack to get a range checked vector:
#define vector Vector

// trivially range-checked string (no iterator checking):
struct String : std::string {

    String() { }
    String(const char* p) :std::string(p) {}
    String(const string& s) :std::string(s) {}
    template<class S> String(S s) :std::string(s) {}
    String(int sz, char val) :std::string(sz,val) {}
    template<class Iter> String(Iter p1, Iter p2) : std::string(p1,p2) { }

    char& operator[](unsigned int i) // rather than return at(i);
    {
        if (i<0||size()<=i) throw Range_error(i);
        return std::string::operator[](i);
    }

    const char& operator[](unsigned int i) const
    {
        if (i<0||size()<=i) throw Range_error(i);
        return std::string::operator[](i);
    }
};

#ifndef _MSC_VER
namespace __gnu_cxx {

    template<> struct hash<String>
    {
        size_t operator()(const String& s) const
        {
            return hash<std::string>()(s);
        }
    };

} // of namespace __gnu_cxx
#endif


struct Exit : runtime_error {
    Exit(): runtime_error("Exit") {}
};

// error() simply disguises throws:
inline void error(const string& s)
{
    throw runtime_error(s);
}

inline void error(const string& s, const string& s2)
{
    error(s+s2);
}

inline void error(const string& s, int i)
{
     ostringstream os;
    os << s <<": " << i;
    error(os.str());
}

#if _MSC_VER<1500
    // disgusting macro hack to get a range checked string:
    #define string String
    // MS C++ 9.0 have a built-in assert for string range check
    // and uses "std::string" in several places so that macro substitution      fails
#endif

template<class T> char* as_bytes(T& i)  // needed for binary I/O
{
    void* addr = &i;    // get the address of the first byte
                        // of memory used to store the object
    return static_cast<char*>(addr); // treat that memory as bytes
}


inline void keep_window_open()
{
    cin.clear();
    cout << "Please enter a character to exit\n";
    char ch;
    cin >> ch;
    return;
}

inline void keep_window_open(string s)
{
    if (s=="") return;
    cin.clear();
    cin.ignore(120,'\n');
    for (;;) {
        cout << "Please enter " << s << " to exit\n";
        string ss;
        while (cin >> ss && ss!=s)
            cout << "Please enter " << s << " to exit\n";
        return;
    }
}



// error function to be used (only) until error() is introduced in Chapter 5:
inline void simple_error(string s)  // write ``error: s?? and exit program
{
    cerr << "error: " << s << '\n';
    keep_window_open();     // for some Windows environments
    exit(1);
}

// make std::min() and std::max() accessible:
#undef min
#undef max

#include<iomanip>
inline ios_base& general(ios_base& b)   // to augment fixed and scientific
{
    b.setf(ios_base::fmtflags(0),ios_base::floatfield);
    return b;
}

// run-time checked narrowing cast (type conversion):
template<class R, class A> R narrow_cast(const A& a)
{
    R r = R(a);
    if (A(r)!=a) error(string("info loss"));
    return r;
}


inline int randint(int max) { return rand()%max; }

inline int randint(int min, int max) { return randint(max-min)+min; }

inline double sqrt(int x) { return sqrt(double(x)); }   // to match C++0x

#endif
#include <iostream>  //for learning, it's probably better to know what each header file does before you use it. silly book.
using namespace std; //act like std:: is before function calls from that library
int main()                             //C++ programs start by executing the function main
{
    cout <<"Hello, World!\n";   //output "Hello, World!"
    cin.get();         //wait for a return character to be entered
    return 0;
}
#include<iostream>
#include<string>
#include<vector>
#include<algorithm>
#include<cmath>
using namespace std;
inline void keep_window_open() { char ch; cin >> ch; }