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]

21.3.2.6.6 basic_­string​::​replace [string.replace]

constexpr basic_string& replace(size_type pos1, size_type n1, const basic_string& str);
Effects: Equivalent to: return replace(pos1, n1, str.data(), str.size());
constexpr basic_string& replace(size_type pos1, size_type n1, const basic_string& str, size_type pos2, size_type n2 = npos);
Effects: Equivalent to:
return replace(pos1, n1, basic_string_view<charT, traits>(str).substr(pos2, n2));
template<class T> constexpr basic_string& replace(size_type pos1, size_type n1, const T& t);
Constraints:
  • is_­convertible_­v<const T&, basic_­string_­view<charT, traits>> is true and
  • is_­convertible_­v<const T&, const charT*> is false.
Effects: Equivalent to:
basic_string_view<charT, traits> sv = t;
return replace(pos1, n1, sv.data(), sv.size());
template<class T> constexpr basic_string& replace(size_type pos1, size_type n1, const T& t, size_type pos2, size_type n2 = npos);
Constraints:
  • is_­convertible_­v<const T&, basic_­string_­view<charT, traits>> is true and
  • is_­convertible_­v<const T&, const charT*> is false.
Effects: Equivalent to:
basic_string_view<charT, traits> sv = t;
return replace(pos1, n1, sv.substr(pos2, n2));
constexpr basic_string& replace(size_type pos1, size_type n1, const charT* s, size_type n2);
Expects: [s, s + n2) is a valid range.
Throws:
  • out_­of_­range if pos1 > size(),
  • length_­error if the length of the resulting string would exceed max_­size() (see below), or
  • any exceptions thrown by allocator_­traits<Allocator>​::​allocate.
Effects: Determines the effective length xlen of the string to be removed as the smaller of n1 and size() - pos1.
If size() - xlen >= max_­size() - n2 throws length_­error.
Otherwise, the function replaces the characters in the range [begin() + pos1, begin() + pos1 + xlen) with a copy of the range [s, s + n2).
Returns: *this.
constexpr basic_string& replace(size_type pos, size_type n, const charT* s);
Effects: Equivalent to: return replace(pos, n, s, traits​::​length(s));
constexpr basic_string& replace(size_type pos1, size_type n1, size_type n2, charT c);
Throws:
  • out_­of_­range if pos1 > size(),
  • length_­error if the length of the resulting string would exceed max_­size() (see below), or
  • any exceptions thrown by allocator_­traits<Allocator>​::​allocate.
Effects: Determines the effective length xlen of the string to be removed as the smaller of n1 and size() - pos1.
If size() - xlen >= max_­size() - n2 throws length_­error.
Otherwise, the function replaces the characters in the range [begin() + pos1, begin() + pos1 + xlen) with n2 copies of c.
Returns: *this.
constexpr basic_string& replace(const_iterator i1, const_iterator i2, const basic_string& str);
Effects: Equivalent to: return replace(i1, i2, basic_­string_­view<charT, traits>(str));
template<class T> constexpr basic_string& replace(const_iterator i1, const_iterator i2, const T& t);
Constraints:
  • is_­convertible_­v<const T&, basic_­string_­view<charT, traits>> is true and
  • is_­convertible_­v<const T&, const charT*> is false.
Expects: [begin(), i1) and [i1, i2) are valid ranges.
Effects: Equivalent to:
basic_string_view<charT, traits> sv = t;
return replace(i1 - begin(), i2 - i1, sv.data(), sv.size());
constexpr basic_string& replace(const_iterator i1, const_iterator i2, const charT* s, size_type n);
Effects: Equivalent to: return replace(i1, i2, basic_­string_­view<charT, traits>(s, n));
constexpr basic_string& replace(const_iterator i1, const_iterator i2, const charT* s);
Effects: Equivalent to: return replace(i1, i2, basic_­string_­view<charT, traits>(s));
constexpr basic_string& replace(const_iterator i1, const_iterator i2, size_type n, charT c);
Expects: [begin(), i1) and [i1, i2) are valid ranges.
Effects: Equivalent to: return replace(i1 - begin(), i2 - i1, n, c);
template<class InputIterator> constexpr basic_string& replace(const_iterator i1, const_iterator i2, InputIterator j1, InputIterator j2);
Constraints: InputIterator is a type that qualifies as an input iterator ([container.requirements.general]).
Effects: Equivalent to: return replace(i1, i2, basic_­string(j1, j2, get_­allocator()));
constexpr basic_string& replace(const_iterator i1, const_iterator i2, initializer_list<charT> il);
Effects: Equivalent to: return replace(i1, i2, il.begin(), il.size());