On Fri, 15 Dec 2006 16:07:17 +0100 Pavel Machek wrote:
> On Fri 2006-12-15 08:52:22, Scott Preece wrote:
> > On 12/15/06, Pavel Machek <[email protected]> wrote:
> > >Hi!
> > >
> > >> Pavel Machek wrote:
> > >> >> From: Randy Dunlap <[email protected]>
> > >> >> +Use one space around (on each side of) most binary and ternary
> > >operators,
> > >> >> +such as any of these:
> > >> >> + = + - < > * / % | & ^ <= >= == != ? :
> > >> >
> > >> > Actually, this should not be hard rule. We want to allow
> > >> >
> > >> > j = 3*i + l<<2;
> > >>
> > >> Which would be very misleading. This expression evaluates to
> > >>
> > >> j = (((3 * i) + l) << 2);
> > >>
> > >> Binary + precedes <<.
> > >
> > >Aha, okay. So this one should be written as
> > >
> > > j = 3*i+l << 2;
> > >
> > >(Well, parenthesses should really be used. Anyway, sometimes grouping
> > >around operator is useful, even if I made mistake demonstrating that.
> > ---
> >
> > I think the mistake illuminates why parentheses should be the rule. If
> > you're thinking about using spacing to convey grouping, use
> > parentheses instead...
>
> Not in simple cases.
>
> 3*i + 2*j should be writen like that. Not like
> (3 * i) + (2 * j)
I would just write it as:
3 * i + 2 * j
---
~Randy
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