[string.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]

21.3.2.6.2 basic_­string​::​append [string.append]

constexpr basic_string& append(const basic_string& str);

Effects:Equivalent to: return append(str.data(), str.size());

constexpr basic_string& append(const basic_string& str, size_type pos, size_type n = npos);

Effects:Equivalent to:

return append(basic_string_view<charT, traits>(str).substr(pos, n));

template<class T> constexpr basic_string& append(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.data(), sv.size());

template<class T> constexpr basic_string& append(const T& t, size_type pos, size_type n = npos);

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.substr(pos, n));

constexpr basic_string& append(const charT* s, size_type n);

Preconditions: [s, s + n) is a valid range.

Effects:Appends a copy of the range [s, s + n) to the string.

constexpr basic_string& append(const charT* s);

Effects:Equivalent to: return append(s, traits​::​length(s));

constexpr basic_string& append(size_type n, charT c);

Effects:Appends n copies of c to the string.

template<class InputIterator> constexpr basic_string& append(InputIterator first, InputIterator last);

Effects:Equivalent to: return append(basic_­string(first, last, get_­allocator()));

constexpr basic_string& append(initializer_list<charT> il);

Effects:Equivalent to: return append(il.begin(), il.size());

constexpr void push_back(charT c);

Effects:Equivalent toappend(size_­type{1}, c).