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Re: [plt-scheme] assertions and the learning of macro-fu
> > I still don't understand what is meant by
> > "expression position" here.
>
> Maybe operator position would be clearer. The first
> part of an sexpr that is evaluated to yield on a
> function that is apply to the rest of the sexpr
>
> (operator operand ...)
>
In
(set! position0 position1)
_position0_ is a position where only variables may appear.
At _position1_ you may place whatever expression you want.
For that reason, such positions are often referred to as
expression position.
-- Matthias