Generalising string in pattern

rajyalakshmi has asked for the wisdom of the Perl Monks concerning the following question:

HI All,

I have pattern which looks like this:

$pattern=Latest 29 Items in Feed & 0 New Fetched items';

In the above pattern string.I would like generalised 29 and 0..

any idea how we do it??? example the patter would want to like Latest x Items in Feed & x New Fetched items';

where x means any digit

Comment on Generalising string in pattern

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Re: Generalising string in pattern by Utilitarian (Vicar) on Nov 13, 2009 at 07:52 UTC
Your question is very unspecific, assuming you want to match this string format given varaible is called `$pattern` in which case you should look at the `\d` character class in perlre and perhaps consider using `qr()` if this regex is to be used repeatedly	[reply] [d/l] [select]
Re: Generalising string in pattern by bichonfrise74 (Vicar) on Nov 13, 2009 at 08:49 UTC
Based on how I interpret your request, I think this is what you want. `#!/usr/bin/perl use strict; my $pattern = qr/Latest \d+ Items in / . qr/Feed & \d New Fetched items/; while (<DATA>) { print if /$pattern/; } __DATA__ Latest 29 Items in Feed & 0 New Fetched items Testing Latest 28 Items in Feed & 0 New Fetched items Latest 100 Items Latest 28 Items in Feed & 0 New Fetched items` [download]	[reply] [d/l]
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Re: Generalising string in pattern by Corion (Patriarch) on Nov 13, 2009 at 08:01 UTC
See perlre. If you show us the code you've written, we can give you more concrete comments about it.	[reply]
Re^2: Generalising string in pattern by rajyalakshmi (Acolyte) on Nov 13, 2009 at 08:41 UTC
#!/usr/bin/perl $filepath="D:/fetch/autofetch.log"; my $pattern1 =' Latest 29 Items in Feed & 0 New Fetched items'; sysopen($FILE,$filepath,o_RDWR) or die "could find the file"; while (my $line = <$FILE>) { # print $line if ($line =~m/\b$pattern1/ ); if($line =~m/$pattern/ ) { print $line; } In the file i am searching for $pattern1. The file has Latest 29 Items in Feed & 0 New Fetched items Latest 28 Items in Feed & 0 New Fetched items Latest 28 Items in Feed & 0 New Fetched items Now i want pattern to match all 3.. But now my present pattern matches only first one	[reply]
Re^3: Generalising string in pattern by Corion (Patriarch) on Nov 13, 2009 at 08:45 UTC
See perlre about `\d`, or about the `[...]` character class notation. Also, you might want to use `<code>...</code>` tags around your code and data so it renders and downloads nicely.	[reply] [d/l] [select]