@bar = 0..9;
@foo = splice(@bar, 3, 2);
# $bar[3] and $bar[4] are removed.
# now @foo is (3, 4) and @bar is (0,1,2,5,6,7,8,9)

@bar = 0..9;
splice(@bar, 5, 0, 100, 200);
# Note that the 'length' is zero. This means *nothing* is removed from @bar.
# then, 100 and 200 are pasted in so
# @bar is (0,1,2,3,4,100,200,5,6,7,8,9)

@bar = 0..10;
@foo = splice(@bar, 7, 3, 300);
# $bar[7], $bar[8], and $bar[9] are removed, and returned
# to @foo. the value '300' is inserted there.
# now @bar = (0,1,2,3,4,5,6,300,10)
# and @foo = (7,8,9)