Re: Using the same hashes as different object variables

Your code doesn't show what %orig_graph is, but I assume you're calling new as ->new(\%orig_graph).

The problem is, you now have two references to the same data. You'd need to copy the data. Perhaps deep-copy the data, but that will depend on your requirements. Copying a hash is trivial:

my %copy = %original;
[download]

To make a deep copy, use Data::Dumper (with Purity = 1) and eval the result.

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Re^2: Using the same hashes as different object variables by mrguy123 (Hermit) on Jan 20, 2010 at 12:38 UTC
Thanks for your reply I think I do need a deep copy (my original hash also has arrays inside). Can you give me a bit more info on how to use the Data:Dumper for a deep copy? I usually just use it for displaying a hash	[reply]
Re^3: Using the same hashes as different object variables by WizardOfUz (Friar) on Jan 20, 2010 at 13:03 UTC
You could also use `dclone()` from Storable to make a deep copy of your data.	[reply] [d/l]
Re^3: Using the same hashes as different object variables by trwww (Priest) on Jan 20, 2010 at 13:12 UTC
`my $hash = eval Data::Dumper->new([{foo => 1, bar => 2}])->Purity(1)->Dump;`	[reply] [d/l]