Re^3: Add value from one array element into another of same ID

What version of Perl are you running? length undef should return undef without warnings since 5.012 (April 2010), if I remember correctly.

map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]

Comment on Re^3: Add value from one array element into another of same ID Select or Download Code

Replies are listed 'Best First'.
Re^4: Add value from one array element into another of same ID by Anonymous Monk on May 27, 2021 at 19:21 UTC
v5.10.1	[reply]
Re^5: Add value from one array element into another of same ID by tangent (Parson) on May 27, 2021 at 20:02 UTC
`push @new, $d if defined $d->{Name} && length $d->{Name} && ! exists $used{ $d-> +{Name} };` [download]	[reply] [d/l]