45 lines
1.0 KiB
Markdown
45 lines
1.0 KiB
Markdown
[span.obs]
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# 23 Containers library [[containers]](./#containers)
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## 23.7 Views [[views]](views#span.obs)
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### 23.7.2 Contiguous access [[views.contiguous]](views.contiguous#span.obs)
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#### 23.7.2.2 Class template span [[views.span]](views.span#span.obs)
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#### 23.7.2.2.5 Observers [span.obs]
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[ð](#lib:span,size)
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`constexpr size_type size() const noexcept;
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`
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[1](#1)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/containers.tex#L20773)
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*Effects*: Equivalent to: return *size_*;
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[ð](#lib:span,size_bytes)
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`constexpr size_type size_bytes() const noexcept;
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`
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[2](#2)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/containers.tex#L20784)
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*Effects*: Equivalent to: return size() * sizeof(element_type);
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[ð](#lib:span,empty)
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`constexpr bool empty() const noexcept;
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`
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[3](#3)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/containers.tex#L20795)
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*Effects*: Equivalent to: return size() == 0;
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