170 lines
4.7 KiB
Markdown
170 lines
4.7 KiB
Markdown
[re.regex.assign]
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# 28 Text processing library [[text]](./#text)
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## 28.6 Regular expressions library [[re]](re#regex.assign)
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### 28.6.7 Class template basic_regex [[re.regex]](re.regex#assign)
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#### 28.6.7.3 Assignment [re.regex.assign]
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[ð](#lib:basic_regex,operator=)
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`basic_regex& operator=(const basic_regex& e);
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`
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[1](#1)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/text.tex#L10584)
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*Postconditions*: flags() and mark_count() returne.flags() and e.mark_count(), respectively[.](#1.sentence-1)
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[ð](#lib:basic_regex,operator=_)
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`basic_regex& operator=(basic_regex&& e) noexcept;
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`
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[2](#2)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/text.tex#L10596)
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*Postconditions*: flags() and mark_count() return the values thate.flags() and e.mark_count(), respectively, had before assignment[.](#2.sentence-1)
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e is in a valid state with unspecified value[.](#2.sentence-2)
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[ð](#lib:basic_regex,operator=__)
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`basic_regex& operator=(const charT* p);
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`
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[3](#3)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/text.tex#L10609)
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*Effects*: Equivalent to: return assign(p);
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[ð](#lib:basic_regex,operator=___)
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`basic_regex& operator=(initializer_list<charT> il);
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`
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[4](#4)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/text.tex#L10620)
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*Effects*: Equivalent to: return assign(il.begin(), il.end());
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[ð](#lib:basic_regex,operator=____)
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`template<class ST, class SA>
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basic_regex& operator=(const basic_string<charT, ST, SA>& s);
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`
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[5](#5)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/text.tex#L10632)
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*Effects*: Equivalent to: return assign(s);
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[ð](#lib:basic_regex,assign)
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`basic_regex& assign(const basic_regex& e);
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`
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[6](#6)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/text.tex#L10643)
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*Effects*: Equivalent to: return *this = e;
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[ð](#lib:basic_regex,assign_)
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`basic_regex& assign(basic_regex&& e) noexcept;
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`
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[7](#7)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/text.tex#L10654)
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*Effects*: Equivalent to: return *this = std::move(e);
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[ð](#lib:basic_regex,assign__)
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`basic_regex& assign(const charT* p, flag_type f = regex_constants::ECMAScript);
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`
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[8](#8)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/text.tex#L10665)
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*Effects*: Equivalent to: return assign(string_type(p), f);
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[ð](#lib:basic_regex,assign___)
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`basic_regex& assign(const charT* p, size_t len, flag_type f = regex_constants::ECMAScript);
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`
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[9](#9)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/text.tex#L10676)
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*Effects*: Equivalent to: return assign(string_type(p, len), f);
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[ð](#lib:basic_regex,assign____)
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`template<class ST, class SA>
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basic_regex& assign(const basic_string<charT, ST, SA>& s,
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flag_type f = regex_constants::ECMAScript);
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`
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[10](#10)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/text.tex#L10689)
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*Effects*: Assigns the regular expression contained in the strings, interpreted according the flags specified in f[.](#10.sentence-1)
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If an exception is thrown, *this is unchanged[.](#10.sentence-2)
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[11](#11)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/text.tex#L10695)
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*Postconditions*: If no exception is thrown,flags() returns f and mark_count() returns the number of marked sub-expressions within the expression[.](#11.sentence-1)
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[12](#12)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/text.tex#L10701)
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*Returns*: *this[.](#12.sentence-1)
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[13](#13)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/text.tex#L10705)
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*Throws*: regex_error if s is not a valid regular expression[.](#13.sentence-1)
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[ð](#lib:basic_regex,assign_____)
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`template<class InputIterator>
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basic_regex& assign(InputIterator first, InputIterator last,
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flag_type f = regex_constants::ECMAScript);
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`
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[14](#14)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/text.tex#L10718)
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*Effects*: Equivalent to: return assign(string_type(first, last), f);
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[ð](#lib:assign,basic_regex______)
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`basic_regex& assign(initializer_list<charT> il,
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flag_type f = regex_constants::ECMAScript);
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`
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[15](#15)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/text.tex#L10730)
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*Effects*: Equivalent to: return assign(il.begin(), il.end(), f);
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