in reply to Re^5: initialize all values in a hash
in thread initialize all values in a hash

The autovivification module is pretty good for this kind of thing. Offers you the ability to simply switch off autovivification, warn about it, or croak. Rather than being tied to a particular hash, it's lexically scoped. And it's context-sensitive, so you could decide that 'store' operations are allowed to autovivify, like:

{ no autovivification qw(strict); use autovivification qw(store); my %hash; $hash{foo}{bar}{baz} = 1; # autovivifies OK delete $hash{fool}{bar}{baz}; # dies }

If only autovivification weren't so tricky to type.

perl -E'sub Monkey::do{say$_,for@_,do{($monkey=[caller(0)]->[3])=~s{::}{ }and$monkey}}"Monkey say"->Monkey::do'