Gets the value to pop without actual popping (removing)
| Lists.au3 _ShiftPeek( $aShift ) |
| $aShift | Shift register array as handle |
| value | Value to pop from shift register |
| 1 | Not a shift register |
| 2 | Shift register is empty, no values |
_ShiftPush, _ShiftPop, _ShiftGet, _ShiftValueInShift
If $checkValue = _ShiftPeek( $aMyShift ) Then $myValue = _ShiftPop( $aMyShift )