cpplinq

Introduction

cpplinq is a tool aiming to simulate .NET Framework LINQ with c++.

With cpplinq, you will be able to use SQL-like grammar to do some search in an array.

For example, you can use codes below to search items whose x value is even, order results with x descending, and get x and y^2 for each matched item.

#define USE_CPPLINQ_MACRO
#include "cpplinq.h"

struct Record
{
    int x;
    int y;
};

std::vector<Record> records = { {1, 10}, {2, 12}, {3, 11}, {4, 13} };

auto result = FROM (records)
    WHERE (o.x % 2 == 0)
    ORDERBY (o.x, DESCEND)
    SELECT (o.x, o.y * o.y);

The result would be { { 4, 169 }, { 2, 144 } } with type std::vector<std::tuple<int, int>>.

Supported Clauses

• where
• orderBy
• select
• take
• skip
• count
• first
• last
• sum
• average
• join (support inner join for at most 4 tables)