RE: adding hash reference into hash

[Shishir K. Singh]

oops..mistake!!

$intHash1Ref = {'A' => 'B'};
$intHash2Ref = {'C' => 'D'};

%containerHash = ('hash1' => $intHash1Ref, 'hash2' => $intHash2Ref);

foreach my $hashRefKeys (keys %containerHash) {

    my $hashRef = $containerHash{$hashRefKeys};
    foreach my $hashKeys (keys %{$hashRef} ) {

      print $hashKeys, "   ", $hashRef->{$hashKeys},"\n";
    }


}




-----Original Message-----
From: Shishir K. Singh 
Sent: Monday, March 03, 2003 12:42 PM
To: 'Hanson, Rob'; 'Yannick Warnier'; [EMAIL PROTECTED]
Subject: RE: adding hash reference into hash


You may want to handle them as 



$intHash1Ref = {'A' => 'B'};
$intHash2Ref = {'C' => 'D'};

%containerHash = ('hash1' => $intHash1Ref, 'hash2' => $intHash2Ref);

foreach my $hashRefKeys (keys %containerHash) {
   foreach my $hashKeys (keys %{$containerHash{$hashRefKeys}} ) {
      print $hashKeys, "   ", $hashRef->{$hashKeys},"\n";
    }
}




Output is 

C   D
A   B

-----Original Message-----
From: Hanson, Rob [mailto:[EMAIL PROTECTED]
Sent: Monday, March 03, 2003 12:14 PM
To: 'Yannick Warnier'; [EMAIL PROTECTED]
Subject: RE: adding hash reference into hash


Your syntax is a little off...

$intHash1Ref = {};
$intHash2Ref = {};

# note use of parens, not curly braces
%containerHash = (hash1 => $intHash1Ref, hash2 => $intHash2Ref);

The parens store a list into %containerHash, the curly-braces were storing a
hash-ref.

Rob

-----Original Message-----
From: Yannick Warnier [mailto:[EMAIL PROTECTED]
Sent: Monday, March 03, 2003 11:40 AM
To: [EMAIL PROTECTED]
Subject: adding hash reference into hash


Hi,

I'm just trying to make a structure with a hash containing some
references to other (yet unused) hashes.

So what I wrote this:

  $intHash1Ref = {};
  $intHash2Ref = {};

  %containerHash = { hash1 => $intHash1Ref, hash2 => $intHash2Ref};

Then when I try to have a list of keys to that containerHash:

  print keys(%containerHash);

I get some hexadecimal values like:

  HASH(0x813f9b0)

How can I manage to do that cleanly? 
I'm searching in "Programming Perl 3th Ed." for that but I don't get
it... yet.

Yannick

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