17 Language support library [support]

17.10 Initializer lists [support.initlist]

17.10.4 Initializer list access [support.initlist.access]

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constexpr const E* begin() const noexcept;
1
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Returns: A pointer to the beginning of the array.
If size() == 0 the values of begin() and end() are unspecified but they shall be identical.
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constexpr const E* end() const noexcept;
2
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Returns: begin() + size().
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constexpr size_t size() const noexcept;
3
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Returns: The number of elements in the array.
4
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Complexity: Constant time.