From: James Kanze (kanze_at_[hidden])
Date: 2002-02-20 15:52:14
Karl Nelson <kenelson_at_[hidden]> writes:
|> > > I think most programmers would expect it to give them the nth
|> > > character of the formatted string. But I'm just guessing about
|> > > this.
|> > Interesting. I never looked at it this way. I would suspect that
|> > there would be very few cases where someone would get confused
|> > about the meaning in this way. However, if I'm wrong, it would be
|> > a good argument against operator.
|> I would have expected that  on a format gives access to a
|> formatting specifications for argument #.
|> format_expr fmt("%d %s");
|> fmt gives "%d"
|> (Okay it is a bit confusing as printf starts from one.)
|> I personally view operator  as "indexing". So foo[i][j] means
|> "j-th of i-th of foo".
I suspect that that is what most programmers think of it as. I'll admit
that I only thought of it as projection after reading Barton and
Nackman. And that I tend to have a deep understanding of the lower
layer aspects, which may cloud my vision.
|> I think the use of .with() or operator() has more merit.
|> But this is purely personal preference.
Fundamentally, I think that any choice of operator will involve personal
preference. About the only real technical requirement is that it have a
strictly lower precedence than the four basic operators -- after that, I
could live with any of them, even if my personal preference is for
-- James Kanze mailto:kanze_at_[hidden] Conseils en informatique orientée objet/ Beratung in objektorientierter Datenverarbeitung Ziegelhüttenweg 17a, 60598 Frankfurt, Germany Tel. +49(0)179 2607481
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