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2499
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1 #pragma once
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2 #include <array>
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3 #include <assert.h>
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4
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5
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6 template<class _Ty,
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7 size_t _Size>
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8 class NZIArray : std::array<_Ty, _Size>
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9 {
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10 public:
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11 reference ZerothIndex()
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12 {
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13 return std::array<_Ty, _Size>::operator [](0);
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14 }
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15
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16 reference operator[](size_type _Pos)
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17 { // subscript nonmutable sequence
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18 #if _ITERATOR_DEBUG_LEVEL == 2
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19 assert(_Pos != 0 && "not allowed to access zeroth element");
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20
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21 #elif _ITERATOR_DEBUG_LEVEL == 1
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22 _SCL_SECURE_VALIDATE_RANGE(_Pos != 0);
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23 #endif /* _ITERATOR_DEBUG_LEVEL */
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24
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25 __analysis_assume(_Pos != 0);
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26
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27 return std::array<_Ty, _Size>::operator [](_Pos);
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28 }
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29
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30 const_reference operator[](size_type _Pos) const
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31 { // subscript nonmutable sequence
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32 #if _ITERATOR_DEBUG_LEVEL == 2
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33 assert(_Pos != 0 && "not allowed to access zeroth element");
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34
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35 #elif _ITERATOR_DEBUG_LEVEL == 1
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36 _SCL_SECURE_VALIDATE_RANGE(_Pos != 0);
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37 #endif /* _ITERATOR_DEBUG_LEVEL */
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38
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39 __analysis_assume(_Pos != 0);
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40
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41 return std::array<_Ty, _Size>::operator [](_Pos);
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42 }
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43 };
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