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  1. or download this
    [@myarray]-->[ 0 ]->[ value 1 ]
                 [ 1 ]->[ value 2 ]
                 [ 2 ]->[ value 3 ]
                 [ 3 ]->[ value 4 ]
                 [ 4 ]->[ value 5 ]
    
  2. or download this
    [@myarray]-->[ 0 ]---->[ value 1 ]
                 [ 1 ]---->[ value 2 ]
                 [ 2 ]-\
                 [ 3 ]-\\->[ value 4 ]
                        \->[ value 5 ]
    
  3. or download this
    @moo = grep {; {if ($_ % 2 > 0){ 0;last; } 1;}}  @moo;
    
  4. or download this
    @moo = grep { +{if ($_ % 2 > 0){ 0;last; } 1;} }  @moo;
    
  5. or download this
    @moo = grep { not ( $_ % 2 ) }  @moo;