Why have both Value and abstract_value?

[eyalroz]

Value and abstract_value are both abstract base classes which can't be instantiated, with the latter inheriting the former. But - what's the use in even having a Value class, if abstract_value is its only inheritor? Can't we just fold the latter into the former?

[jarro2783]

That's a good question. I will take a look at these and see what is going on.

[jarro2783]

I think the only reason for abstract_value is so that standard_value can be specialised on bool, which sets the default values correctly for a bool.
I'm thinking that the other way to do it would be to instantiate some initialiser based on T and then abstract_value just becomes the standard_value.