C++ map值为结构体的示例

我的程序代码 304 字 次

背景

某一种数据，会有重复记录，后附加各类数据。利用map的唯一性，将重复者过滤。并将附加的数据存储到结构体，方便在代码中使用。后续可写入文件或数据。

实例：某一路段至少有一个门架，门架有各种数据。简单示例：

1
000250 32021 1057

代码

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#include <iostream>
#include <fstream>
#include <string>
#include <vector>
#include <map>


// 分割string
std::vector<std::string> stringSplit(const std::string& s, const std::string& delim)
{
    std::vector<std::string> elems;
    size_t pos = 0;
    size_t len = s.length();
    size_t delim_len = delim.length();
    if (delim_len == 0) return elems;
    while (pos < len)
    {
        int find_pos = s.find(delim, pos);
        if (find_pos < 0)
        {
            elems.push_back(s.substr(pos, len - pos));
            break;
        }
        elems.push_back(s.substr(pos, find_pos - pos));
        pos = find_pos + delim_len;
    }
    return elems;
}

typedef struct tGantryDist_t {
    int preDist;
    int nextDist;
} GantryDist_t;

// tmpe
void ReadGantry(const char* filename)
{
    std::fstream f(filename);
    std::string line; 
    GantryDist_t gantryDist;
    std::map<std::string, GantryDist_t> tmpGantryM;
    std::vector<std::string> tmpV;

truewhile (std::getline(f, line))
true{
        tmpV = stringSplit(line, " ");
        
        gantryDist.preDist = std::stoi(tmpV[1]);
        gantryDist.nextDist = std::stoi(tmpV[2]);
        tmpGantryM.insert(std::pair<std::string, GantryDist_t>(tmpV[0].c_str(), gantryDist));
true}

    for (auto it: tmpGantryM)
    {

        gantryDist = static_cast<GantryDist_t>(it.second);
        printf("result: %s %d %d\n", it.first.c_str(), gantryDist.preDist, gantryDist.nextDist);
    }
}