splice(ARRAY,OFFSET,LENGTH,LIST)

     splice(ARRAY,OFFSET,LENGTH)

     splice(ARRAY,OFFSET)

             Removes the elements designated by OFFSET and LENGTH
             from  an  array, and replaces them with the elements
             of LIST, if any.  Returns the elements removed  from
             the array.  The array grows or shrinks as necessary.
             If LENGTH is omitted, removes everything from OFFSET
             onward.   The following equivalencies hold (assuming
             $[ == 0):

                  push(@a,$x,$y)                splice(@a,$#a+1,0,$x,$y)
                  pop(@a)                       splice(@a,-1)
                  shift(@a)                     splice(@a,0,1)
                  unshift(@a,$x,$y)             splice(@a,0,0,$x,$y)
                  $a[$x] = $y                   splice(@a,$x,1,$y);

             Example, assuming array lengths are passed before arrays:

                  sub aeq { # compare two array values
                       local(@a) = splice(@_,0,shift);
                       local(@b) = splice(@_,0,shift);
                       return 0 unless @a == @b;     # same len?
                       while (@a) {
                           return 0 if pop(@a) ne pop(@b);
                       }
                       return 1;
                  }
                  if (&aeq($len,@foo[1..$len],0+@bar,@bar)) { ... }