I am using this line: 

foreach my $pair (keys %{$config{server}}) {
.....
}

but get the warning:

Pseudo-hashes are deprecated at ......

I am using the example from 'Programming Perl (third edition)' Section 9.4.3

I guess my ultimate question would be, what have they been deprecated to?
And an example would be GREATLY appreciated.


TIA

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