Re: [boost] Re: [ANN] Spirit C++ parser framework.

From: Greg Colvin (gcolvin_at_[hidden])
Date: 2001-05-25 18:25:06

From: joel de guzman <joel_at_[hidden]>
> From: "Douglas Gregor":
> > 
> > The bracket notation unfortunately can't be used for everything, because
> > digit[0, 2] == digit[2]
> > 
> 
> [] can't have 2 parameters. Is that what you mean?
> 
> can't have:
> 
> struct X {
>    int operator [] (int, int);
> };
> 
> So we're left with the () op.
> 
> ... Right....
> 
> Seigh, I kinda liked [] for iteration to distinguish from
> grouping ex:
> 
> (a | b | c)[0, more];
> 
> instead of
> 
> (a | b | c)(0, more);
> 
> Oh well...

A verbose but clear alternative is

   (a | b | c).repeat(0, more)