Taybin Rutkin wrote:
> On Wed, 22 Nov 2000, Dave Gudeman wrote:
>
> > f := create(x,y) {2*x + y}
> >
> > which could be called like a function f(2,3) to produce 7 or like an SL5
> > procedure call:
> >
> > f with (2,3) #binds x to 2 and y to 3
> > i := @f # activates f with its current parameters
> > every !f # generates all values of f with current parameters
> > f with (4,5) #binds new parameters
> > j := @f # activates f with new parameters
>
> Could you explain why "every !f" wouldn't just return 7 continually?
Well in this case it isn't useful, just an example of the use of ! as opposed
to @. It would produce the value 7 once and then throw it away and fail,
since ! does not force repetition, just exhausts the result set of the
underlying expression. Alternatively, you could define ! to continue where
the last @ left off.
BTW, I'm using Netscape Messenger to send mail, are you Unix users getting
ugly-formated messages? (please respond to me only, not to the group,
thanks.)
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