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cppdraft_translate/cppdraft/syserr/errcondition/modifiers.md
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[syserr.errcondition.modifiers]
# 19 Diagnostics library [[diagnostics]](./#diagnostics)
## 19.5 System error support [[syserr]](syserr#errcondition.modifiers)
### 19.5.5 Class error_condition [[syserr.errcondition]](syserr.errcondition#modifiers)
#### 19.5.5.3 Modifiers [syserr.errcondition.modifiers]
[🔗](#lib:assign,error_condition)
`void assign(int val, const error_category& cat) noexcept;
`
[1](#1)
[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/diagnostics.tex#L1331)
*Postconditions*: *val_* == val and *cat_* == &cat[.](#1.sentence-1)
[🔗](#lib:operator=,error_condition)
`template<class ErrorConditionEnum>
error_condition& operator=(ErrorConditionEnum e) noexcept;
`
[2](#2)
[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/diagnostics.tex#L1343)
*Constraints*: is_error_condition_enum_v<ErrorConditionEnum> is true[.](#2.sentence-1)
[3](#3)
[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/diagnostics.tex#L1347)
*Effects*: Equivalent to:error_condition ec = make_error_condition(e);
assign(ec.value(), ec.category());
[4](#4)
[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/diagnostics.tex#L1355)
*Returns*: *this[.](#4.sentence-1)
[🔗](#lib:clear,error_condition)
`void clear() noexcept;
`
[5](#5)
[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/diagnostics.tex#L1366)
*Postconditions*: value() == 0 and category() == generic_category()[.](#5.sentence-1)