Extensible struct type via variadic template arguments

[Joseph Rushton Wakeling via Digitalmars-d-learn]

On Monday, 11 April 2016 at 22:06:00 UTC, ag0aep6g wrote:
>
> mixin template multipleEdgeProperties (EdgePropertyList...)
> {
>     static if (EdgePropertyList.length >= 1)
>     {
>         mixin singleEdgeProperty!(EdgePropertyList[0]);
>         mixin multipleEdgeProperties!(EdgePropertyList[1 .. $]);
>     }
> }
>
> mixin template singleEdgeProperty (alias property)
> {
>     mixin(`public property.Type[] ` ~ property.name ~ `;`);
> }

Ah, nice!  I knew I was missing a trick somewhere with mixin 
templates, but I haven't used them for sufficiently long that my 
brain wasn't in the right place to find it.  Your solution is 
_much_ more elegant than what I have now.

> The string mixin is hidden away in singleEdgeProperty, but it's 
> still there.
>
> To get rid of it, you'd have take a different approach, I think.

Yea, makes sense.  I'm probably going to hang onto the broader 
details of the approach (a string mixin or two isn't _that_ 
horrendous...) because there are some other aspects to it that I 
would like to play with.  But your suggested alternative is 
interesting to consider.

Thanks very much for the useful ideas! :-)