[string.op.append] (original) (raw)

21 Strings library [strings]

21.3 String classes [string.classes]

21.3.2 Class template basic_­string [basic.string]

21.3.2.6 Modifiers [string.modifiers]

21.3.2.6.1 basic_­string​::​operator+= [string.op.append]

constexpr basic_string& operator+=(const basic_string& str);

Effects:Equivalent to: return append(str);

template<class T> constexpr basic_string& operator+=(const T& t);

Constraints:

• is_­convertible_­v<const T&, basic_­string_­view<charT, traits>> istrue and
• is_­convertible_­v<const T&, const charT*> isfalse.

Effects:Equivalent to:

basic_string_view<charT, traits> sv = t; return append(sv);

constexpr basic_string& operator+=(const charT* s);

Effects:Equivalent to: return append(s);

constexpr basic_string& operator+=(charT c);

Effects:Equivalent to: return append(size_­type{1}, c);

constexpr basic_string& operator+=(initializer_list<charT> il);

Effects:Equivalent to: return append(il);