in reply to "open" Best Practices
Ad 1: Another reason to use lexical filehandles is that bareword filehandles clash with package names. See also Prevent Strings From Being Interpreted As A File Handle here and on StackOverflow.
map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]
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In Section
Meditations