Re^2: Tidy up json from nulls, empty arrays and hashes

> If $r is a hash ref, then $$r is a hash, then $$r{$k} is a value in that hash.

That's not true, and that's why the syntax is confusing.

$ perl -Mstrict -we 'my $r = {}; say $$r'
Not a SCALAR reference at -e line 1.
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If $r is a hash ref, then %$r is a hash, then $$r{$k} is a value in that hash. Therefore, I prefer the $r->{$k} syntax.

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

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