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  1. or download this
    $ perlcritic 11119158.pl 
Expression form of "map" at line 8, column 12.  See page 169 of PBP.  
+(Severity: 4)
...

        @mapped = map   transform($_),   @list;      #not ok
        @mapped = map { transform($_) }  @list;      #ok
  2. or download this
    $ cat ~/.perlcriticrc 

...

[BuiltinFunctions::RequireBlockMap]
severity = 2