[string.replace] (original) (raw)

27 Strings library [strings]

27.4 String classes [string.classes]

27.4.3 Class template basic_string [basic.string]

27.4.3.7 Modifiers [string.modifiers]

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

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

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);

Preconditions: [s, s + n2) is a valid range.

Effects: Determines the effective length xlen of the string to be removed as the smaller of n1 and size() - pos1.

Ifsize() - 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).

Throws:

• out_of_range if pos1 > size(),
• length_error if the length of the resulting string would exceed max_size(), or
• any exceptions thrown by allocator_traits<Allocator>​::​allocate.

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);

Effects: Determines the effective length xlen of the string to be removed as the smaller of n1 and size() - pos1.

Ifsize() - 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.

Throws:

• out_of_range if pos1 > size(),
• length_error if the length of the resulting string would exceedmax_size(), or
• any exceptions thrown by allocator_traits<Allocator>​::​allocate.

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

Preconditions: [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);

Preconditions: [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.reqmts]).

Effects: Equivalent to: return replace(i1, i2, basic_string(j1, j2, get_allocator()));

template<[_container-compatible-range_](container.intro.reqmts#concept:container-compatible-range "23.2.2.1 Introduction [container.intro.reqmts]")<charT> R> constexpr basic_string& replace_with_range(const_iterator i1, const_iterator i2, R&& rg);

Effects: Equivalent to:return replace(i1, i2, basic_string(from_range, std::forward<R>(rg), 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());