Why is Phobos `Flag` so overthought ?

[user1234]

On Monday, 6 May 2024 at 18:06:53 UTC, Julian Fondren wrote:
> On Monday, 6 May 2024 at 17:55:49 UTC, user1234 wrote:
>> I think this just works:
>>
>> ```d
>> enum Flag : bool
>> {
>>     no,
>>     yes
>> }
>>
>> alias AllowVancancy = Flag; // example usage
>> ```
>
> ```d
> import std.stdio : writeln;
>
> enum Flag : bool { no, yes }
> alias Traditional = Flag;
> alias Color = Flag;
>
> void hello(Traditional traditional, Color color) {
>     if (traditional && color) {
>         writeln("\x1b[31;1mhello world\x1b[0m");
>     } else if (traditional && !color) {
>         writeln("hello world");
>     } else if (!traditional && color) {
>         writeln("\x1b[31;1mHello, world!\x1b[0m");
>     } else {
>         writeln("Hello, world!");
>     }
> }
>
> void main() {
>     hello(Color.yes, Traditional.yes); // this is wrong, but 
> accepted
> }
> ```

Ah yes I see, strongly typed bools.
Thanks 👍.