Parsing and splitting textfile

[Hugo Florentino]

On Mon, 24 Feb 2014 14:00:09 -0500, Steven Schveighoffer wrote:
>
> std.regex

I should have explained myself better.
I have already used regular expressions a couple of times. My doubt 
here is how parse the file progressively, not loading it completely into 
memory.
If this can be done solely with std.regex, please clarify futher

I was thinking in using byLine, but for that, I see first I must use 
something like:

auto myfile = File(usermbox);

Doesn't that load the whole file into memory?

Regards, Hugo