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  1. or download this
    $ perl -Mstrict -Mwarnings -E '
    my @a = ( 1 .. 10 );
    ...
    sub transform (&@) { map $_[ 0 ]->( $_ ), @_[ 1 .. $#_ ] }'
    2 3 4 5 6 7 8 9 0 1
    $
    
  2. or download this
    $ perl -Mstrict -Mwarnings -E '
    my @a = ( 1 .. 10 );
    ...
    sub transform (&) { $_[ 0 ]->( $_ ) }'
    2 3 4 5 6 7 8 9 10 11
    $
    
  3. or download this
    $ perl -Mstrict -Mwarnings -E '
    my @a = ( 1 .. 10 );
    ...
    sub transform (&) { $_[ 0 ]->( $_ ) }'
    2 3 4 5 6 7 8 9 0 1
    $