tmp/tmpn_cengeq/{from.md → to.md}
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####
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``` cpp
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void assign(int val, const error_category& cat) noexcept;
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```
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*
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``` cpp
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template<class ErrorCodeEnum>
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error_code& operator=(ErrorCodeEnum e) noexcept;
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```
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*
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*Returns:* `*this`.
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*Remarks:*
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This operator shall not participate in overload resolution unless
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`is_error_code_enum_v<ErrorCodeEnum>` is `true`.
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``` cpp
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void clear() noexcept;
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```
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*
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#### Modifiers <a id="syserr.errcode.modifiers">[[syserr.errcode.modifiers]]</a>
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``` cpp
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void assign(int val, const error_category& cat) noexcept;
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```
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*Ensures:* `val_ == val` and `cat_ == &cat`.
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``` cpp
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template<class ErrorCodeEnum>
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error_code& operator=(ErrorCodeEnum e) noexcept;
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```
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*Constraints:* `is_error_code_enum_v<ErrorCodeEnum>` is `true`.
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*Ensures:* `*this == make_error_code(e)`.
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*Returns:* `*this`.
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``` cpp
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void clear() noexcept;
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```
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*Ensures:* `value() == 0` and `category() == system_category()`.
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