21 Strings library [strings]

21.3 String classes [string.classes]

21.3.3 Class template basic_­string [basic.string]

21.3.3.7 Modifiers [string.modifiers]

21.3.3.7.4 basic_­string​::​insert [string.insert]

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constexpr basic_string& insert(size_type pos, const basic_string& str);
1
#
Effects: Equivalent to: return insert(pos, str.data(), str.size());
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constexpr basic_string& insert(size_type pos1, const basic_string& str, size_type pos2, size_type n = npos);
2
#
Effects: Equivalent to: return insert(pos1, basic_string_view<charT, traits>(str), pos2, n);
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template<class T> constexpr basic_string& insert(size_type pos, const T& t);
3
#
Constraints:
  • (3.1)
    is_­convertible_­v<const T&, basic_­string_­view<charT, traits>> is true and
  • (3.2)
    is_­convertible_­v<const T&, const charT*> is false.
4
#
Effects: Equivalent to: basic_string_view<charT, traits> sv = t; return insert(pos, sv.data(), sv.size());
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template<class T> constexpr basic_string& insert(size_type pos1, const T& t, size_type pos2, size_type n = npos);
5
#
Constraints:
  • (5.1)
    is_­convertible_­v<const T&, basic_­string_­view<charT, traits>> is true and
  • (5.2)
    is_­convertible_­v<const T&, const charT*> is false.
6
#
Effects: Equivalent to: basic_string_view<charT, traits> sv = t; return insert(pos1, sv.substr(pos2, n));
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constexpr basic_string& insert(size_type pos, const charT* s, size_type n);
7
#
Preconditions: [s, s + n) is a valid range.
8
#
Effects: Inserts a copy of the range [s, s + n) immediately before the character at position pos if pos < size(), or otherwise at the end of the string.
9
#
Returns: *this.
10
#
Throws:
  • (10.1)
    out_­of_­range if pos > size(),
  • (10.2)
    length_­error if n > max_­size() - size(), or
  • (10.3)
    any exceptions thrown by allocator_­traits<Allocator>​::​allocate.
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constexpr basic_string& insert(size_type pos, const charT* s);
11
#
Effects: Equivalent to: return insert(pos, s, traits​::​length(s));
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constexpr basic_string& insert(size_type pos, size_type n, charT c);
12
#
Effects: Inserts n copies of c before the character at position pos if pos < size(), or otherwise at the end of the string.
13
#
Returns: *this
14
#
Throws:
  • (14.1)
    out_­of_­range if pos > size(),
  • (14.2)
    length_­error if n > max_­size() - size(), or
  • (14.3)
    any exceptions thrown by allocator_­traits<Allocator>​::​allocate.
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constexpr iterator insert(const_iterator p, charT c);
15
#
Preconditions: p is a valid iterator on *this.
16
#
Effects: Inserts a copy of c at the position p.
17
#
Returns: An iterator which refers to the inserted character.
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constexpr iterator insert(const_iterator p, size_type n, charT c);
18
#
Preconditions: p is a valid iterator on *this.
19
#
Effects: Inserts n copies of c at the position p.
20
#
Returns: An iterator which refers to the first inserted character, or p if n == 0.
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template<class InputIterator> constexpr iterator insert(const_iterator p, InputIterator first, InputIterator last);
21
#
Constraints: InputIterator is a type that qualifies as an input iterator ([container.requirements.general]).
22
#
Preconditions: p is a valid iterator on *this.
23
#
Effects: Equivalent to insert(p - begin(), basic_­string(first, last, get_­allocator())).
24
#
Returns: An iterator which refers to the first inserted character, or p if first == last.
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constexpr iterator insert(const_iterator p, initializer_list<charT> il);
25
#
Effects: Equivalent to: return insert(p, il.begin(), il.end());