C:\_32>perl -MDevel::Peek -le "@x=('0' .. '2'); Dump $x[0];"
SV = PV(0x54c658) at 0x54bc28
  REFCNT = 1
  FLAGS = (POK,pPOK)
  PV = 0x548438 "0"\0
  CUR = 1
  LEN = 10

C:\_32>perl -MDevel::Peek -le "@x=('1' .. '2'); Dump $x[0];"
SV = IV(0x31bc18) at 0x31bc28
  REFCNT = 1
  FLAGS = (IOK,pIOK)
  IV = 1