Re: Warnings when sorting by hashref

I like to define a value subroutine. sub myvalue { return uc($options{$_[0]}->{type} // "") } This particular one returns the empty string ("") if $options{$_[0]}->{type} is undefined. Now the sort becomes: sort {myvalue($a) cmp myvalue($b)} keys %options This code is

Re: Warnings when sorting by hashref

> On Apr 11, 2017, at 6:13 AM, Mike Martin wrote: > > Hi > > I have the following code as an example against a hash of hashes, to sort by > hashrf key > > foreach my $opt (sort {uc($options{$b}->{type}) cmp uc($options{$a}->{type})} > keys %options){ >my

Warnings when sorting by hashref

Hi I have the following code as an example against a hash of hashes, to sort by hashrf key foreach my $opt (sort {uc($options{$b}->{type}) cmp uc($options{$a}->{type})} keys %options){ my $type=$options{$opt}->{vtype}; $video_type->append_text($type) if defined($type)