mattlangford / variant

c++11 variant since my compiler is apparently old

variant

c++11 variant since my compiler is apparently old

Usage

I think this is pretty compliant with a real variant with a few different function names probably

Define the variant

using my_variant = variant<std::string, double, T>;

Set the variant

my_variant v;
v = std::string();

Change it maybe

double value = 12;
v = value;

Get value

double new_value = v.get<double>();

// It's not a string, so this will throw
std::string thats_not_a_string = v.get<std::string>();

Apply a visitor

struct my_visitor
{
    void operator()(const std::string&);
    void operator()(const double&);
    void operator()(T&);
}

v.apply_visitor<my_visitor>()