Define basic arithmetic operations on Dimension{<:Real}

[tiemvanderdeure]

It would be useful to define +, - etc on X(1). A use case is when these are used as indices: things like newidx = dimidx .+ (X(1),Y(1)) would work.

[rafaqz]

But so that only works on the same dim? Otherwkse your example is inviting bugs.

Also having a real DimIndex wrapper rather than a tuple would help here...

[tiemvanderdeure]

But so that only works on the same dim? Otherwkse your example is inviting bugs.

Yeah what I would propose is X(1) + X(2) would return X(3) but X(1) + Y(2) is not defined.

Also having a real DimIndex wrapper rather than a tuple would help here...

That's true. If we had that and it behaved like a CartesianIndex we could even define things like checkbounds on it

[rafaqz]

Yeah I was lazy and just used Tuple years ago but we can have both