As always there are many ways to do this - the first which came to my mind was to use grep. eg.

foreach my $key ( grep { /^[A-Z]+$/ } keys %runset ) {
    print $key, " ", $runset{$key}, "\n";
}

[download]

... But if you really wanted to delete the non-uppercase hash elements, then expanding on this usage of grep ...

delete $runset{$_} for ( grep { !/^[A-Z]+$/ } keys %runset );

[download]

 

perl -e 's&&rob@cowsnet.com.au&&&split/[@.]/&&s&.com.&_&&&print'

In reply to Re: Parsing a hash table for only variables that are uppercase. by rob_au
in thread Parsing a hash table for only variables that are uppercase. by Rhodium

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