If you just wanna get rid of the long series of dereferences that tend to uglify the code and cause much typing, save each step of dereference inside each loop.
YuckFoo
for my $nkey (keys %$exception_report) {
my $node = $exception_report->{$nkey};
print "Exceptions for $nkey:\n\n";
for my $ekey (keys %$node) {
my $exception = $node->{$ekey};
for my $fkey (keys %$exception) {
my $file = $exception->{$fkey};
while ( my ($metric, $value) = each %$file) {
print "\t$ekey : ($fkey) $metric = $value\n";
}
}
}
}
