只包含C++头文件Ranges和LINQ模板库：boolinq

jopen 11年前

这是一个只包含C++ 头文件Ranges和LINQ模板库。支持STL/Qt集合。

Example with integers

int src[] = {1,2,3,4,5,6,7,8};  auto dst = from(src).where( [](int a){return a%2 == 1;})    // 1,3,5,7                      .select([](int a){return a*2;})         // 2,6,10,14                      .where( [](int a){return a>2 && a<12;}) // 6,10                      .toVector();    // dst type: std::vector<int>  // dst items: 6,10

Example with structs

struct Man  {      std::string name;      int age;  };    Man src[] =  {      {"Kevin",14},      {"Anton",18},      {"Agata",17},      {"Terra",20},      {"Layer",15},  };    auto dst = from(src).where(  [](const Man & man){return man.age < 18;})                      .orderBy([](const Man & man){return man.age;})                      .select( [](const Man & man){return man.name;})                      .toVector();    // dst type: std::vector<std::string>  // dst items: "Kevin", "Layer", "Agata"

Interesting example

struct Message  {      std::string PhoneA;      std::string PhoneB;      std::string Text;  };    Message messages[] =  {      {"Anton","Troll","Hello, friend!"},      {"Denis","Wride","OLOLO"},      {"Anton","Papay","WTF?"},      {"Denis","Maloy","How r u?"},      {"Denis","Wride","Param-pareram!"},  };    int DenisUniqueContactCount =      from(messages).where(   [](const Message & msg){return msg.PhoneA == "Denis";})                    .distinct([](const Message & msg){return msg.PhoneB;})                    .count();    // DenisUniqueContactCount == 2

容器的支持

  • C++: Native arrays, pairs of pointers
  • STL: list, stack, queue, vector, deque, set, map, any compatible ....
  • Qt: QList, QVector, QSet, QMap.

项目主页：http://www.open-open.com/lib/view/home/1392543545303