51 lines
1.5 KiB
Markdown
51 lines
1.5 KiB
Markdown
[syserr.errcode.constructors]
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# 19 Diagnostics library [[diagnostics]](./#diagnostics)
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## 19.5 System error support [[syserr]](syserr#errcode.constructors)
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### 19.5.4 Class error_code [[syserr.errcode]](syserr.errcode#constructors)
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#### 19.5.4.2 Constructors [syserr.errcode.constructors]
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[ð](#lib:error_code,constructor)
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`error_code() noexcept;
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`
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[1](#1)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/diagnostics.tex#L1064)
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*Effects*: Initializes *val_* with 0 and *cat_* with &system_category()[.](#1.sentence-1)
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[ð](#lib:error_code,constructor_)
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`error_code(int val, const error_category& cat) noexcept;
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`
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[2](#2)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/diagnostics.tex#L1076)
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*Effects*: Initializes *val_* with val and *cat_* with &cat[.](#2.sentence-1)
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[ð](#lib:error_code,constructor__)
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`template<class ErrorCodeEnum>
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error_code(ErrorCodeEnum e) noexcept;
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`
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[3](#3)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/diagnostics.tex#L1089)
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*Constraints*: [is_error_code_enum_v](system.error.syn#lib:is_error_code_enum_v "19.5.2 Header <system_error> synopsis [system.error.syn]")<ErrorCodeEnum> is true[.](#3.sentence-1)
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[4](#4)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/diagnostics.tex#L1093)
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*Effects*: Equivalent to:error_code ec = make_error_code(e);
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assign(ec.value(), ec.category());
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