From Jason Turner

[using]

Diff to HTML by rtfpessoa

tmp/tmp7zvo0qbd/{from.md → to.md} RENAMED
@@ -20,11 +20,11 @@ either `<cassert>` or `<assert.h>` depends each time on the lexically
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  current definition of `NDEBUG`.[^20]
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  A translation unit shall include a header only outside of any external
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  declaration or definition, and shall include the header lexically before
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  the first reference in that translation unit to any of the entities
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- declared in that header.
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  #### Linkage <a id="using.linkage">[[using.linkage]]</a>
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  Entities in the C++standard library have external linkage (
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  [[basic.link]]). Unless otherwise specified, objects and functions have
 
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  current definition of `NDEBUG`.[^20]
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  A translation unit shall include a header only outside of any external
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  declaration or definition, and shall include the header lexically before
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  the first reference in that translation unit to any of the entities
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+ declared in that header. No diagnostic is required.
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  #### Linkage <a id="using.linkage">[[using.linkage]]</a>
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  Entities in the C++standard library have external linkage (
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  [[basic.link]]). Unless otherwise specified, objects and functions have