Re: regex issue

[Jay Norwood]

On Friday, 16 March 2012 at 03:36:12 UTC, Joshua Niehus wrote:
Hello,
Does anyone know why I would get different results between
ctRegex and regex in the following snippet?

Thanks,
Josh



I'm also having questions about the matchers.  From what I 
understand in the docs, if I use this greedy matcher to count 
lines, it should have counted all the lines in the first match 
(when I hade it outside the foreach.  In that case, I should have 
been able to do something like:

matches=match(input,ctr);
l_cnt = matches.length();

But I only get length=1, and so I'm a bit concerned that greedy 
is not really working. In fact, it is about 3x faster to just run 
the second piece of code, so I think something must be wrong...


void wcp_ctRegex(string fn)
{
        string input = cast(string)std.file.read(fn);
        enum ctr =  ctRegex!("\n","g");
        ulong l_cnt;
        foreach(m; match(input,ctr))
        {
                l_cnt ++;
        }
}


void wcp_char(string fn)
{
        string input = cast(string)std.file.read(fn);
        ulong l_cnt;
        foreach(c; input)
        {
                if (c == '\n')
                l_cnt ++;
        }
}