in reply to Re^4: I am confused by a "Learning Perl" sample showing "unshift"
in thread I am confused by a "Learning Perl" sample showing "unshift"

:-)

No, as the first one changes @a, but the second one changes @b. The result is the same, but ends up in a different container.

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

In Section Seekers of Perl Wisdom