%s not producing string representation of enum?

[Daniel Kozak via Digitalmars-d-learn]

V Thu, 10 Dec 2015 19:54:43 +0530
Shriramana Sharma via Digitalmars-d-learn
<digitalmars-d-learn at puremagic.com> napsáno:

> Hello. I'm using DMD 2.069.2. As per
> http://ddili.org/ders/d.en/enum.html the following code is supposed
> to output the *names* of the suits:
> 
> import std.stdio;
> void main()
> {
>     enum Suit { spades, hearts, diamonds, clubs }
>     foreach (suit; Suit.min .. Suit.max + 1) { writefln("%s", suit); }
> }
> 
> But I'm getting 0 1 2 3. Kindly advise.
> 

void main() {
    writeln(typeid(typeof(Suit.max)));
    writeln(typeid(typeof(Suit.max + 1)));
}

+ 1 makes int from Suit

import std.stdio;
import std.conv;

foreach (suit; Suit.min .. Suit.max + 1)
{ 
    enum Suit { spades, hearts, diamonds, clubs }
    writefln("%s", to!Suit(suit));
}