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  1. or download this
    perl -MO=Concise,-exec -le '$x = 10;
        for(qw(moo baz bar foo)) {
    ...
    1e <@> print vK
    1f <@> leave[1 ref] vKP/REFC
    -e syntax OK
    
  2. or download this
    $result = ( ( foo() - bar() ) - baz() ) - moo();