thanks a lot frank......i think i hav got the thing.
Regards
Saurabh
--- Frank Wiles <[EMAIL PROTECTED]> wrote:
> .------[ Saurabh Singhvi wrote (2003/06/05 at
> 07:57:14) ]------
> |
> | well i cant understand what the $1, $2 and $3
> do??
> | herez the code
> |
> | #!/usr/local/bin/perl -w
> |
> | # Get the date in the standard date format. (ex:
> Tue
> | Oct 24 19:03:03
> | 1995 )
> | my $date = localtime();
> |
> | # Search through the date looking for the hour,
> | minute, and second.
> | if ($date =~ /(\d\d):(\d\d):(\d\d)/)
> | {
> | # Save the information.
> | my $hours = $1;
> | my $minutes = $2;
> | my $seconds = $3;
> | print "Hours : $hours \n";
> | print "Minutes: $minutes \n";
> | print "Seconds: $seconds \n";
> | }
> |
> `-------------------------------------------------
>
> In the regular expression:
>
> $date =~ /(\d\d):(\d\d):(\d\d)/
>
> What is happening is that it is looking for
> three sets of two digits
> each, separated by colons. Because the digits
> are enclosed in
> parenthesis they are "grabbed" by the regex
> engine and stored into
> the enumerated variables $1, $2, and $3... from
> left to right.
>
> The if() block is executed because the regular
> expression returns
> true if it finds a suitable match.
>
> So if $date contained:
>
> Thu Jun 5 10:04:03 CDT 2003
>
> $1 would contain '10'.
> $2 would contain '04'.
> $3 would contain '03'.
>
> Hope this helps.
>
> ---------------------------------
> Frank Wiles <[EMAIL PROTECTED]>
> http://frank.wiles.org
> ---------------------------------
>
=====
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
SAURABH SINGHVI
H-8,ROOM NO.291
IIT BOMBAY
POWAI
MUMBAI
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
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