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  1. or download this
    perl -le '$data=[{ data => 1 },{a => 2, b => 3}];print $$data[0]->{dat
    +a}'
    1
    
  2. or download this
     perl -wle '$data=[{ data => 1 },{a => 2, b => 3}];print $$data[1]->{c
    +}'
    Use of uninitialized value in print at -e line 1.