# what is the difference between these definitions? [duplicate]

I define 2 functions:

g[s_][x_,y_] := the gaussian  (1)

g1[s_,x_,y_] := the gaussian  (2)


I get the same answer using g[s][ x, y] and g1[ s, x, y].
So, what is the difference?
Is there some advantage to be gained in definition 1 over 2?

• Possible duplicate: mathematica.stackexchange.com/q/7999/121 – Mr.Wizard Jul 17 '13 at 1:32
• On the surface, not much. But, they are treated differently by the evaluator, the second (a downvalue) being evaluated before the first (a subvalue). Also, you can add an attribute to a downvalue, but not to a subvalue, without some contortions. – rcollyer Jul 17 '13 at 4:07