Re^3: Yet another config file editing programme : Tell me how to make it better !

What do you think the value of $0 is in the line ?

warn "ip param key : $ip_params{$0}\n"; #TEST
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Re^4: Yet another config file editing programme : Tell me how to make it better ! by dazz (Beadle) on Sep 09, 2021 at 10:16 UTC
Hi I added the line: `warn "ip param key : $ip_params{$0}\n"; #TEST` [download] and another for debugging to see if hash key $0 and value $1 returned anything. Both printed blank. Dazz	[reply] [d/l]
Re^5: Yet another config file editing programme : Tell me how to make it better ! by soonix (Chancellor) on Sep 10, 2021 at 08:20 UTC
I think tybalt89 meant specifically `$0`, as in `warn "\$0: '$0'\n";` [download]	[reply] [d/l] [select]
Re^5: Yet another config file editing programme : Tell me how to make it better ! by eyepopslikeamosquito (Archbishop) on Sep 10, 2021 at 12:35 UTC
Hey, can I join the "what did tybalt89 mean?" game? Sounds like fun. :) I think he meant that dazz needs to take a time out to read and understand perlretut and perlre before continuing. That you really need to understand what `$0` and `$1` mean, what they ought to contain, before printing them out and attempting to interpret their values. Hint: Read the Extracting Matches section at perlretut (and search for `$0` and `$1` in perlvar :).	[reply] [d/l] [select]