Beefy Boxes and Bandwidth Generously Provided by pair Networks
Do you know where your variables are?

Re: hashes of array references

by davorg (Chancellor)
on Jul 22, 2009 at 19:19 UTC ( #782415=note: print w/replies, xml ) Need Help??

in reply to hashes of array references

$numInHash = %$EDHRef;

This isn't doing what you think it is. Evaluating a hash in scalar context is rarely useful. They don't work the same way as arrays.

What you really want is to call keys in scalar context. That will give you the number of keys in the hash.

$numInHash = keys %$EDHRef;

See the Copyright notice on my home node.

Perl training courses

Replies are listed 'Best First'.
Re^2: hashes of array references
by tobyperl (Initiate) on Jul 22, 2009 at 20:24 UTC
    You are the Perl God....that was exactly my problem. Actually the code worked fine. I was just obtaining the number of elements wrong. Thank you very much.

Log In?

What's my password?
Create A New User
Domain Nodelet?
Node Status?
node history
Node Type: note [id://782415]
and the web crawler heard nothing...

How do I use this?Last hourOther CB clients
Other Users?
Others lurking in the Monastery: (3)
As of 2023-12-10 20:10 GMT
Find Nodes?
    Voting Booth?
    What's your preferred 'use VERSION' for new CPAN modules in 2023?

    Results (41 votes). Check out past polls.