use List::MoreUtils qw( zip6 );

my @b =
   map { $_->[0] - $_->[1] }
      zip6
         @{[ @a[0..$#a-1] ]},
         @{[ @a[1..$#a]   ]};

[download]

:)

In reply to Re^2: Abusing Map by ikegami
in thread Abusing Map by writch

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