_IIF limits two questions

[doppler]

2. Can this statement be on one line:     p=_iff(p=instr(thing$,"\"): p <= 10, p, p=0)
  re: position of "\" must be less than 11 else make it zero

How about:
p=_iff(instr(thing$,"\") <= 10, instr(thing$,"\"), 0)

Yes that is the basis of the line.  My real question, can I mini sub-code the first parameter of the IFF (test comparison).  I thought I could be fancy on the first statement.  Since the IFF statements are separated by comma's.  Only the last minicoding result is the real test.  ie: (p<=10).  I only happened to use instr as a question example.  The minicoding could be almost anything  and referencing other variables to manipulate.  Hell for all intended purposes the first statement could be a sub-function call out. ie:

dim share x, p

p=_iff(test,p,p=0)

sub test
x=instr(thing$,"\")
if x<=10 the p=x
end sub

The whole idea of a sub maybe washed up