DB<8> use Devel::Peek

  DB<9> @x=(1)

  DB<10> Dump @x
SV = PVAV(0x31c26e0) at 0x31dbe08      <----
  REFCNT = 1
  FLAGS = ()
  ARRAY = 0x31ff138
  FILL = 0
  MAX = 3
  ARYLEN = 0x0
  FLAGS = (REAL)
  Elt No. 0
  SV = IV(0x31dba20) at 0x31dba30
    REFCNT = 1
    FLAGS = (IOK,pIOK)
    IV = 1

  DB<11> p \@x
ARRAY(0x31dbe08)                         <----
  DB<12>