`examplevalues` property

[HaraldZealot via Digitalmars-d]

On Monday, 3 August 2015 at 13:13:55 UTC, Andrea Fontana wrote:
>
> Why don't you use templates? Something like:
>
> enum ValueType
> {
> 	Init,
> 	Min,
> 	Max
> }
>
> auto exampleValues(T)()
> {
> 	T[ValueType] retVal;
>
> 	retVal[ValueType.Init] = T.init;
> 	static if (__traits(compiles, T.min)) retVal[ValueType.Min] = 
> T.min;
> 	static if (__traits(compiles, T.max)) retVal[ValueType.Max] = 
> T.max;
>
> 	return retVal;
> }
>
> exampleValues!int.writeln;
> exampleValues!string.writeln;

Good solution!

But there is something that not perfect: it can be customizable 
only with template specialization as I see. I want not only 
standard values like `init` `max` or `min` but also some example 
value like 1, 2, 3, 4, 5 for `int`. In last case your template 
solution not so convenient as desired (introduction in language 
feature like `.testValue1` seems ridiculous, and without that 
only template specialization can provide customization, as I have 
said).

But this seems interesting direction, and easy to implement in 
object.d (without library implementation, this feature have 
little benefit).