Re: [MacPerl-AnyPerl] good idea or bad idea?

[Kevin van Haaren <kevinv@hockey.net>]

Sorry for taking so long to reply and thank you, but here it is:  thanks.

I decided to stick with my own implementation instead of using the 
single regex you had.  The reason is this, I tried your regex and it 
kept failing.  I couldn't figure it out until I looked at the 
original HTML page.  I'm looking at the value of a particular META 
tag and they had reversed the name= and content= from what I 
typically see (name first then content).  Obviously I could just 
reverse the order in your regex, but then I got paranoid that they 
might decide to do it the "normal" way and break that regex too.

my way is position independent (not that that is the reason i wrote 
it that way 8-) and I couldn't think of a way to write a single regex 
that was position independent to strip out the data I'm looking for.

Thanks again,
Kevin


At 2:02 PM -0400 7/13/2000, Ronald J Kimball wrote:
>On Thu, Jul 13, 2000 at 12:43:18PM -0500, Kevin van Haaren wrote:
>  > I have a couple of questions about the following code snippet:
>  >
>  > my $story_time;
>  > foreach my $line (split(/\015/,$sci_page_head)) {
>  > 	if ($line =~ /OriginalPublicationDate/) {
>  > 		($story_time) = ($line =~ /content=\"(.*)\"/);
>  > 	}
>  > }
>  > print $story_time;
>  >
>  > First, is declaring the my $line in the foreach line a good idea/bad
>  > idea/doesn't matter?  I know if I declare the $story_time as my
>  > inside the loop it doesn't seem to exist outside the loop.  The code
>  > as written works fine (I don't need the $line variable outside the
>  > loop).
>
>Doesn't matter, but if you don't need $line outside the loop, it makes more
>sense to declare it as you did.
>
>
>  > Second, is this a good way of doing this loop?  $sci_page_head is
>  > just the header info from a web page sucked in via LWP::Simple.  If
>  > it where a text file I'd probably just do a while <> {}.  I guess I'm
>  > asking if there is a way to get rid of the $line variable altogether.
>
>I don't think you need a loop at all:
>
>my($story_time) =
>   $sci_page_head =~ /OriginalPublicationDate.*content="(.*)"/;
>print $story_time;
>
>
>Ronald
>
>
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