It is so called eskimo operator: }{

see perldoc perlrun about -n switch
and compare output of the following two commands

perl -MO=Deparse -ne "$a + $b"
perl -MO=Deparse -ne "$a }{ $b"

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Note: double quotes because of Windows. Linux requires single quotes for the code given

In reply to Re^3: global vars and one liners by ccn
in thread global vars and one liners by punkish

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