Named constructors

[evilrat]

On Wednesday, 9 January 2019 at 20:54:48 UTC, JN wrote:
> On Wednesday, 9 January 2019 at 10:02:12 UTC, bauss wrote:
>>
>> I like this approach to it and you're entirely correct.
>>
>> It would be nice with support for this in the language without 
>> having to create factory methods.
>>
>> Basically something like the following could be lowered to 
>> your code.
>
> I was going to say that this post will be mostly ignored and 
> people will present some template magic to partially implement 
> such feature (just add few imports and some boilerplate code), 
> but I guess I got beaten to it :)

Surprisingly no one was thinking about tags...

Here is the one without templates


struct Stuff_Normal {}
struct Stuff_Special {}

struct Stuff
{

   this(Stuff_Normal _, float x, float y) { ... }
   this(Stuff_Special _, float x, float y) { ... }
}

usage

   auto val = Stuff(Stuff_Normal(), 1, 2);


But honestly Atila version with distinct types was the best IMHO, 
because you know, one doesn't want to add temperature to angle or 
length to money