Re: Something about sizeof(char)

[Paolo Carlini <pcarlini at suse dot de>]

Dhruv Matani wrote:

> I'm not too good at figuring out whether code is portable or not, so I'm
> not rally sure that this would be acceptable, so I'd like to hear from
> the experts.
>  
>
> > ffirst_of(string const& src, string const& f)
> > {
> > #if __CHAR_BIT__ <= 8
> >  char table[1 << __CHAR_BIT__] = { 0 };
> >  string::size_type sz = f.size();
> >  string::size_type i;
> >
> >  for (i = 0; i < sz; ++i)
> >    table[(unsigned int)f[i]] = 1;
> >    
A general problem I can easily see with this kind of idea is that its 
profitability
depends way too much on the size of f: what happens when f is big and src is
small? We should work on this issue, first.

Paolo.