82 lines
2.0 KiB
Markdown
82 lines
2.0 KiB
Markdown
[string.op.append]
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# 27 Strings library [[strings]](./#strings)
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## 27.4 String classes [[string.classes]](string.classes#string.op.append)
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### 27.4.3 Class template basic_string [[basic.string]](basic.string#string.op.append)
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#### 27.4.3.7 Modifiers [[string.modifiers]](string.modifiers#string.op.append)
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#### 27.4.3.7.1 basic_string::operator+= [string.op.append]
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[ð](#lib:operator+=,basic_string)
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`constexpr basic_string& operator+=(const basic_string& str);
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`
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[1](#1)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/strings.tex#L3178)
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*Effects*: Equivalent to: return append(str);
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[ð](#lib:operator+=,basic_string_)
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`template<class T>
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constexpr basic_string& operator+=(const T& t);
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`
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[2](#2)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/strings.tex#L3192)
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*Constraints*:
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- [(2.1)](#2.1)
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is_convertible_v<const T&, basic_string_view<charT, traits>> istrue and
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- [(2.2)](#2.2)
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is_convertible_v<const T&, const charT*> isfalse[.](#2.sentence-1)
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[3](#3)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/strings.tex#L3203)
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*Effects*: Equivalent to:basic_string_view<charT, traits> sv = t;return append(sv);
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[ð](#lib:operator+=,basic_string__)
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`constexpr basic_string& operator+=(const charT* s);
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`
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[4](#4)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/strings.tex#L3218)
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*Effects*: Equivalent to: return append(s);
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[ð](#lib:operator+=,basic_string___)
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`constexpr basic_string& operator+=(charT c);
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`
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[5](#5)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/strings.tex#L3229)
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*Effects*: Equivalent to: return append(size_type{1}, c);
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[ð](#lib:operator+=,basic_string____)
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`constexpr basic_string& operator+=(initializer_list<charT> il);
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`
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[6](#6)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/strings.tex#L3240)
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*Effects*: Equivalent to: return append(il);
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