[MartinKravec]

Is it hash or element of hash ?

I have this hash of hashes:

Graph = (
    lines => {
        line1   => {
            init => "A1",
            term => "A5",
            type => "N2Nrev",
        },
    },
);

For example:

$node = "A5";

And i am doing conditional expression

foreach $key ( keys $graph{lines} ){
			if( ($graph{lines}{$key}{'init'} eq $node) or ($graph{lines}{$key}{'term'} eq $node) ){
				delete($graph{lines}{$key});
			}
		}

So why is this producing error "Type of arg 1 to keys must be hash ( not hash element ) on line 1 " ?

[MartinKravec]

I think i got it..

foreach $key ( keys %{$graph{lines}} ){