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  1. or download this
    perl -MO=Concise -e " @vals = map($_*5, @vals); "
    perl -MO=Concise -e " @vals = map{$_*5} @vals; "
    
  2. or download this
    $  perl -MO=Concise -e " @vals = map($_*5, @vals); "   $  perl -MO=Con
    +cise -e " @vals = map{$_*5} @vals; "
    g  <@> leave[1 ref] vKP/REFC ->(end)                   g  <@> leave[1 
    +ref] vKP/REFC ->(end)
    1     <0> enter ->2                                    1     <0> enter
    + ->2
    ...
                                                           -e syntax OK
    
  3. or download this
    @ARGV and $ARGV[0] =~ /asdf/ and print;
    
  4. or download this
    if(@ARGV and $ARGV[0] =~ /asdf/){ print; }