22 Containers library [containers]

22.7 Views [views]

22.7.3 Class template span [views.span]

22.7.3.5 Observers [span.obs]

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constexpr size_type size() const noexcept;
1
#
Effects: Equivalent to: return size_­;
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constexpr size_type size_bytes() const noexcept;
2
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Effects: Equivalent to: return size() * sizeof(element_­type);
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[[nodiscard]] constexpr bool empty() const noexcept;
3
#
Effects: Equivalent to: return size() == 0;