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Re: What is regular expression for the following thing?

by Punitha (Priest)
on Oct 20, 2008 at 09:13 UTC ( #718171=note: print w/replies, xml ) Need Help??


in reply to What is regular expression for the following thing?

Hi sanjay nayak

You can have a quick reference about the perl regular expressions here http://perldoc.perl.org/perlrequick.html

Moreover in your example coding you misused the matching operator. It should be =~ and you may want something like this

if ($text =~ /^(?:REGISTER|INVITE|BYE)\s\w+[-@_]\w+\.\w+\sSIP\/2\.0/) { print "IN:$text\n"; }

Punitha

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Re^2: What is regular expression for the following thing?
by ikegami (Pope) on Oct 20, 2008 at 09:18 UTC
    I think you meant [-\@_].
    >perl -le"@_='abc'; print qr/[-@_]/;" (?-xism:[-abc])

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[Corion]: Meh. I have a very simple mechanism to scrape+track prices, and even to send me mail if something changes (via cron), but SQLite doesn't support window functions, so my simple SQL to determine a price change won't work :-( Maybe I should store the DB ...
[Corion]: ... in Pg, but that would mean that I'd have to deal with credentials and stuff :)
[Corion]: In fact, the whole thing is just four simple programs, one App::scrape, another being DBIx::RunSQL, and one some glue to convert a JSON object into an SQL INSERT statement (+DBI connect/execute), so it would be an incredibly simple solution...
[Corion]: ... but that simplicity falls down due to SQLite letting me down and me being too lazy to move to a real DB. Maybe DBD::CSV can handle window functions...
[hippo]: Pg has the "trust" mechanism if you don't fancy using credentials for a trivial db.

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