Beefy Boxes and Bandwidth Generously Provided by pair Networks
Think about Loose Coupling
 
PerlMonks  

Re: subroutine reference parameters

by choroba (Abbot)
on Jun 03, 2011 at 14:18 UTC ( #907985=note: print w/ replies, xml ) Need Help??


in reply to subroutine reference parameters

each returns two things, key and value. You only assign to $key. You probably wanted to use keys instead? Or this:

sub printElement { my ($key,$val) = @_; print $key,' ',$val,"\n"; } my %hash = (0 => 'a', 1 => 'b', 2 => 'c'); while(my ($key,$value) = each(%hash)) { &printElement($key, $value); }


Comment on Re: subroutine reference parameters
Download Code
Re^2: subroutine reference parameters
by gnosti (Friar) on Jun 04, 2011 at 01:38 UTC
    Hi,

    You posted a link to the documentation for 'each'. Perhaps you should re-read it! When called in scalar context, the function returns a key. When called in list context, it returns a key-value pair.

      OK, but ($key) = is not scalar context.

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://907985]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others drinking their drinks and smoking their pipes about the Monastery: (16)
As of 2014-12-18 18:31 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

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





    Results (59 votes), past polls