The only other hypothetical I can think of right now is evaluation shorthand. Something like an expression group represented by a class which may be subject to

The only other hypothetical I can think of right now is evaluation shorthand. Something like an expression group represented by a class which may be subject to arithmetic using standard operators. @ could be used as shorthand for a .evaluate_at() method but it's probably not that useful anyway. Maybe passing objects with 'argument @ resource' would be interesting...