Can you put Slots inside an Association?

For example, could have two slots x and y,��

and then be able to do the following...��

�� �� (x -> y) substitute: (1 -> 2).

�� �� self assert: x equals: 1.

So the association method #substitute:

assigns into the relevant variables.

And even better if you could do...

and...

�� �� { x. y ) := #(1 2).

For example, when you're hacking fast and want to return two values from a method without mucking around with creating an object for this, it might look like...

�� �� myCalc

�� �� �� �� ^#(1 2)

but instead of...

�� �� result := inst myCalc.

�� �� x := result at: 1.

�� �� y := result at: 2.

you could do...

���� ��{ x . y } := inst myCalc.

cheers -ben