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);
1
#
Effects: Equivalent to: return append(str);
🔗
template<class T> constexpr basic_string& operator+=(const T& t);
2
#
Constraints:
  • (2.1)
    is_­convertible_­v<const T&, basic_­string_­view<charT, traits>> is true and
  • (2.2)
    is_­convertible_­v<const T&, const charT*> is false.
3
#
Effects: Equivalent to: 
basic_string_view<charT, traits> sv = t;
return append(sv);
🔗
constexpr basic_string& operator+=(const charT* s);
4
#
Effects: Equivalent to: return append(s);
🔗
constexpr basic_string& operator+=(charT c);
5
#
Effects: Equivalent to: return append(size_­type{1}, c);
🔗
constexpr basic_string& operator+=(initializer_list<charT> il);
6
#
Effects: Equivalent to: return append(il);