Suggested std.variant.Algebraic redesign

[bearophile]

Andrei Alexandrescu:

> alias Algebraic!(string, Tuple!(string, This[])) Tree;
>
> Needs a bugfix because of toString.

Filed:
http://d.puremagic.com/issues/show_bug.cgi?id=9580

Once issue 9580 is fixed it will allows a syntax:


import std.variant: Algebraic, This;
import std.typecons: tuple, Tuple;

alias Tree = Algebraic!(string, Tuple!(string, This[]));

void main() {
     import std.stdio;
     auto t = Tree("Sci-Fi",
       [tuple("No", Tree("Action",
                         [tuple("Yes", Tree("Stallone")),
                          tuple("No", Tree("Schwarzenegger"))])),
        tuple("Yes", Tree("Schwarzenegger"))]);

     writeln(t);
}


Thank you,
bye,
bearophile