Re: [boost] Interest in a container which can hold multiple data types?

Subject: Re: [boost] Interest in a container which can hold multiple data types?
From: James Armstrong (armstrhu_at_[hidden])
Date: 2015-05-04 11:33:29

Sorry about the README file, I pretty much just uploaded what I had to
github so people can grab the source. Admittedly, things there are lacking.
I'll work on filling out the readme with some instructions hopefully
today.

The main difference between this and a container of boost:any is that the
container of boost::any still is a container of one data type, just being
that one data type is a very flexible one.  This container natively
supports insertion of different data types.  So, you could do,

int my_int = 5;
double my_double0 = 9342.132;
double my_double1 = 987.654;
std::string my_string("This is a string.");
std::vector<double> my_vec;
my_vector.push_back(123.456);

omni my_container;

my_container.push_back(my_int);
my_container.push_back(my_double);
my_container.push_back(my_string);
my_container.push_back(my_vector);

and the container happily stores the data.  You can then access the data
through iterators

    //access all doubles
    for (auto itr = my_container.begin<double>(); itr !=
my_containert.end<double>(); ++itr)
    {
        std::cout << *itr << std::endl;
    }

or through specifying the data type and index

//get the 0th element string
std::cout << my_container.at<string>(0) << std::endl;

-- 
James Armstrong