% perl -dex
  DB<1> x @foo= 1..10
0  1
1  2
2  3
3  4
4  5
5  6
6  7
7  8
8  9
9  10
  DB<2> x "@foo"
0  '1 2 3 4 5 6 7 8 9 10'
  DB<3>