Beefy Boxes and Bandwidth Generously Provided by pair Networks
There's more than one way to do things
 
PerlMonks  

Re^2: recursive exists in perl

by gsiems (Chaplain)
on Dec 10, 2010 at 02:49 UTC ( #876365=note: print w/ replies, xml ) Need Help??


in reply to Re: recursive exists in perl
in thread recursive exists in perl

Is that really the case? For example, while the following doesn't autovivify $h{A}{B}{C} it does autovivify $h{A}{B}.

use Data::Dumper; my %h; if ( exists( $h{A}{B}{C} ) ) { print "Hi mom!\n"; } print Dumper \%h;

$VAR1 = {
          'A' => {
                   'B' => {}
                 }
        };


Comment on Re^2: recursive exists in perl
Download Code
Re^3: recursive exists in perl
by Anonymous Monk on Dec 10, 2010 at 02:54 UTC
    use Data::Dumper; my %h; no autovivification; if ( exists( $h{A}{B}{C} ) ) { print "Hi mom!\n"; } print Dumper \%h; __END__ $VAR1 = {};

      Ah! Here I was thinking that "no autovivification" was commentary.

      cpanp -i autovivification

      Runs script again... sweet.

      Thank you kind Anonymous for enlightening this humble monk.

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://876365]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others browsing the Monastery: (5)
As of 2014-09-17 07:55 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    How do you remember the number of days in each month?











    Results (66 votes), past polls