如何创建元组的C清单++ [英] How to create a list of tuples C++

问题描述

我是相当新的C ++，我真的不以任何背景。我绑创建一个元组列表，首先会是int，第二个是一个字符串。

I am fairly new to c++, I dont really have any background in it. I am tying to create a list of tuples, the first will be an int, the second will be a string.

  #include <string>
  #include <list>
  #include <boost/tuple/tuple.hpp>
  ....
  list< tuple<int,string> > time;

和得到一个错误。我希望能够创建一个列表，补充一点，我可以通过INT排序项，并有一个描述字符串，什么是INT

And getting an error. I want to be able to create a list, add entries that I can sort by the int, and have the string that describes, what the int was.

我将如何创建这个列表？

How would I create this list?

推荐答案

对于一个简单的列表，用的std ::矢量而不是的std ::列表。

For a simple list use std::vector instead of std::list.

您可能只是想简单的东西，如：

You probably just want something simple such as:

#include <iostream>
#include <vector>
#include <string>
#include "boost/tuple/tuple.hpp"

using namespace std;
using boost::tuple;

typedef vector< tuple<int,string> > tuple_list;

int main(int arg, char* argv[]) {
    tuple_list tl;
    tl.push_back( tuple<int, string>(21,"Jim") );

    for (tuple_list::const_iterator i = tl.begin(); i != tl.end(); ++i) {
        cout << "Age: " << i->get<0>() << endl;
        cout << "Name: " << i->get<1>() << endl;
    }
}

的std ::列表其实是一个双向链表，你可能不需要的实现。

std::list is actually an implementation of a doubly-linked list which you may not need.

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