qqiangwu / parameter

A simple C++14 named parameter library

parameter

A simple C++14 named parameter library

Example: By keyword

#include <parameter/keyword.hpp>
#include <parameter/argument_io.hpp>
#include <parameter/argument_pack.hpp>
#include <iostream>

PARAMETER_KEYWORD(size);
PARAMETER_KEYWORD(pos);
PARAMETER_KEYWORD(ok);

struct Myt {
    PARAMETER_ENABLE_CONSTRUCTOR(Myt)

private:
    template <class... Args>
    Myt(parameter::Argument_pack<Args...> args)
    {
        EXPECT_EQ(args[size_], 10);
        EXPECT_EQ(args[pos_], "Hello world");
        EXPECT_EQ(args[ok_], true);
    }
};

TEST(argument_test, trivial_types)
{
    Myt v{size_ = 10, pos_ = "Hello world", ok_ = true};
}

Example: By type

template <class... Args>
void foo(Args&&... args)
{
    auto pack = parameter::pack_args(args...);

    EXPECT_EQ(parameter::get<std::string>(pack), "String");
    EXPECT_EQ(parameter::get<int>(pack), 100);
    EXPECT_EQ(parameter::get(pack, false), true);
}

foo(std::string{"String"}, true, 100);

Example: By index

template <class... Args>
void boo(Args&&... args)
{
    auto pack = parameter::pack_args(args...);

    EXPECT_EQ(parameter::get<0>(pack), "String");
    EXPECT_EQ(parameter::get<2>(pack), 100);
    EXPECT_EQ(parameter::get<1>(pack), true);
}

boo(std::string{"String"}, true, 100);