/+ dub.sdl:

name "hello"

dependency "sumtype" version="~>0.4.1"

+/

import std.stdio;

​

import sumtype;

​

int main()

{

    alias Item = SumType!(int, string);

    Item[] items;

    items ~= Item(5);

    items ~= Item("text");

    foreach(item; items)

    {

        item.match!(

            (   int num) => writeln("number: ", num),

            (string str) => writeln("string: ", str),

        );

    }

    return 0;

}