21 Containers library [containers]

21.7 Views [views]

21.7.3 Class template span [views.span]

21.7.3.4 Observers [span.obs]

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