If the thing inside the brackets is a single identifier, it's the disambiguation. If it's more, i.e. there is an operation involved (like concatenation in this case), it's the symbolic reference.
map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]

In reply to Re^8: Filehandle/array naming (updated) by choroba
in thread Filehandle/array naming by JSAWS

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