Beefy Boxes and Bandwidth Generously Provided by pair Networks
Perl-Sensitive Sunglasses
 
PerlMonks  

Re: Retrieving data from multidimensional hashes

by friedo (Prior)
on Aug 11, 2008 at 18:54 UTC ( #703717=note: print w/ replies, xml ) Need Help??


in reply to Retrieving data from multidimensional hashes

A couple of options, depending on what appeals to you:

my $num = keys %{ $hash{key} }; # or my $ref = $hash{key}; my $num = keys %$ref;
The first one is short-hand for accessing the second-level hash directly, though I find it a tad ugly, especially if the structures get deeper than two levels. The second one grabs the reference for the second level hash and then calls keys on that, which is a bit more explicit.


Comment on Re: Retrieving data from multidimensional hashes
Select or Download Code

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://703717]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others about the Monastery: (6)
As of 2014-12-28 00:22 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    Is guessing a good strategy for surviving in the IT business?





    Results (177 votes), past polls