Re: Regex search using scalar
On Tue, 04 Nov 2003 20:41:17 -0800, Paul Harwood wrote:
> I would like to enumerate a list and search through each element like
> so:
> [...]
Why do you want to enumerate the list? Do you _really_ need to know the
index of the current element? If really so:
my $i = 0;
foreach ( @list ) {
$i++;
if ( /match/ ) {
# ...
}
}
> If (/$logs[i]/)
Please post _real_ Perl code. The code above has no meaning and won't
even compile.
--
Tore Aursand <[EMAIL PROTECTED]>
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RE: Regex search using scalar
Paul Harwood wrote:
> I would like to enumerate a list and search through each element like
> so:
>
>
>
> If (/$logs[i]/)
>
>
>
> { # code}
>
>
>
>
>
> I know the syntax is wrong so I was hoping someone could
> explain how to
> do this.
If I understand correctly, you want to use grep():
for (grep /pattern/, @list) {
... do something with $_ ...
}
perldoc -f grep
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RE: Regex search using scalar
Paul Harwood wrote:
> Thanks.
>
> Can I substitute /pattern/ with a scalar though?
Yes.
grep $_ eq 'string', @list
>
> -Original Message-
> From: Bob Showalter [mailto:[EMAIL PROTECTED]
> Sent: Wednesday, November 05, 2003 5:24 AM
> To: Paul Harwood; Beginner Perl
> Subject: RE: Regex search using scalar
>
> Paul Harwood wrote:
> > I would like to enumerate a list and search through each element
> > like so:
> >
> >
> >
> > If (/$logs[i]/)
> >
> >
> >
> > { # code}
> >
> >
> >
> >
> >
> > I know the syntax is wrong so I was hoping someone could explain
> > how to do this.
>
> If I understand correctly, you want to use grep():
>
>for (grep /pattern/, @list) {
> ... do something with $_ ...
>}
>
> perldoc -f grep
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RE: Regex search using scalar
The search patterns I am looking for are contained inside the list (each
element of the list is going to be used to scan an entire log file). So
"if ( /match/ )" needs to reference each element of the FOREACH loop
which I will have nested inside a while loop. That's what's
confusing me.
-Original Message-
From: news [mailto:[EMAIL PROTECTED] On Behalf Of Tore Aursand
Posted At: Wednesday, November 05, 2003 5:12 AM
Posted To: Perl
Conversation: Regex search using scalar
Subject: Re: Regex search using scalar
On Tue, 04 Nov 2003 20:41:17 -0800, Paul Harwood wrote:
> I would like to enumerate a list and search through each element like
> so:
> [...]
Why do you want to enumerate the list? Do you _really_ need to know the
index of the current element? If really so:
my $i = 0;
foreach ( @list ) {
$i++;
if ( /match/ ) {
# ...
}
}
> If (/$logs[i]/)
Please post _real_ Perl code. The code above has no meaning and won't
even compile.
--
Tore Aursand <[EMAIL PROTECTED]>
--
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
--
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
Re: Regex search using scalar
Paul Harwood wrote: The search patterns I am looking for are contained inside the list (each element of the list is going to be used to scan an entire log file). So "if ( /match/ )" needs to reference each element of the FOREACH loop which I will have nested inside a while loop. That's what's confusing me. This is a FAQ perldoc -q 'How do I efficiently match many regular expressions at once' -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
