const charT* c_str() const noexcept;
const charT* data() const noexcept;
Returns: A pointer p such that p + i == &operator[](i) for each i in [0, size()].
Complexity: Constant time.
Requires: The program shall not alter any of the values stored in the character array.
Returns: A pointer p such that p + i == &operator[](i) for each i in [0, size()].
Complexity: Constant time.
Requires: The program shall not alter the value stored at p + size().
operator basic_string_view<charT, traits>() const noexcept;
Effects: Equivalent to: return basic_string_view<charT, traits>(data(), size());
allocator_type get_allocator() const noexcept;
Returns: A copy of the Allocator object used to construct the string or, if that allocator has been replaced, a copy of the most recent replacement.
size_type find(basic_string_view<charT, traits> sv,
size_type pos = 0) const noexcept;
Returns: xpos if the function can determine such a value for xpos. Otherwise, returns npos.
Remarks: Uses traits::eq().
size_type find(const basic_string& str,
size_type pos = 0) const noexcept;
Effects: Equivalent to: return find(basic_string_view<charT, traits>(str), pos);
size_type find(const charT* s, size_type pos, size_type n) const;
Returns: find(basic_string_view<charT, traits>(s, n), pos).
size_type find(const charT* s, size_type pos = 0) const;
Requires: s points to an array of at least traits::length(s) + 1 elements of charT.
Returns: find(basic_string_view<charT, traits>(s), pos).
size_type find(charT c, size_type pos = 0) const;
Returns: find(basic_string(1, c), pos).
size_type rfind(basic_string_view<charT, traits> sv,
size_type pos = npos) const noexcept;
Returns: xpos if the function can determine such a value for xpos. Otherwise, returns npos.
Remarks: Uses traits::eq().
size_type rfind(const basic_string& str,
size_type pos = npos) const noexcept;
Effects: Equivalent to: return rfind(basic_string_view<charT, traits>(str), pos);
size_type rfind(const charT* s, size_type pos, size_type n) const;
Returns: rfind(basic_string_view<charT, traits>(s, n), pos).
size_type rfind(const charT* s, size_type pos = npos) const;
Requires: s points to an array of at least traits::length(s) + 1 elements of charT.
Returns: rfind(basic_string_view<charT, traits>(s), pos).
size_type rfind(charT c, size_type pos = npos) const;
Returns: rfind(basic_string(1, c), pos).
size_type find_first_of(basic_string_view<charT, traits> sv,
size_type pos = 0) const noexcept;
Returns: xpos if the function can determine such a value for xpos. Otherwise, returns npos.
Remarks: Uses traits::eq().
size_type find_first_of(const basic_string& str,
size_type pos = 0) const noexcept;
Effects: Equivalent to: return find_first_of(basic_string_view<charT, traits>(str), pos);
size_type
find_first_of(const charT* s, size_type pos, size_type n) const;
Returns: find_first_of(basic_string_view<charT, traits>(s, n), pos).
size_type find_first_of(const charT* s, size_type pos = 0) const;
Requires: s points to an array of at least traits::length(s) + 1 elements of charT.
Returns: find_first_of(basic_string_view<charT, traits>(s), pos).
size_type find_first_of(charT c, size_type pos = 0) const;
Returns: find_first_of(basic_string(1, c), pos).
size_type find_last_of (basic_string_view<charT, traits> sv,
size_type pos = npos) const noexcept;
Returns: xpos if the function can determine such a value for xpos. Otherwise, returns npos.
Remarks: Uses traits::eq().
size_type find_last_of(const basic_string& str,
size_type pos = npos) const noexcept;
Effects: Equivalent to: return find_last_of(basic_string_view<charT, traits>(str), pos);
size_type find_last_of(const charT* s, size_type pos, size_type n) const;
Returns: find_last_of(basic_string_view<charT, traits>(s, n), pos).
size_type find_last_of(const charT* s, size_type pos = npos) const;
Requires: s points to an array of at least traits::length(s) + 1 elements of charT.
Returns: find_last_of(basic_string_view<charT, traits>(s), pos).
size_type find_last_of(charT c, size_type pos = npos) const;
Returns: find_last_of(basic_string(1, c), pos).
size_type find_first_not_of(basic_string_view<charT, traits> sv,
size_type pos = 0) const noexcept;
Returns: xpos if the function can determine such a value for xpos. Otherwise, returns npos.
Remarks: Uses traits::eq().
size_type find_first_not_of(const basic_string& str,
size_type pos = 0) const noexcept;
Effects: Equivalent to: return find_first_not_of(basic_string_view<charT, traits>(str), pos);
size_type
find_first_not_of(const charT* s, size_type pos, size_type n) const;
Returns: find_first_not_of(basic_string_view<charT, traits>(s, n), pos).
size_type find_first_not_of(const charT* s, size_type pos = 0) const;
Requires: s points to an array of at least traits::length(s) + 1 elements of charT.
Returns: find_first_not_of(basic_string_view<charT, traits>(s), pos).
size_type find_first_not_of(charT c, size_type pos = 0) const;
Returns: find_first_not_of(basic_string(1, c), pos).
size_type find_last_not_of (basic_string_view<charT, traits> sv,
size_type pos = npos) const noexcept;
Returns: xpos if the function can determine such a value for xpos. Otherwise, returns npos.
Remarks: Uses traits::eq().
size_type find_last_not_of(const basic_string& str,
size_type pos = npos) const noexcept;
Effects: Equivalent to: return find_last_not_of(basic_string_view<charT, traits>(str), pos);
size_type find_last_not_of(const charT* s, size_type pos,
size_type n) const;
Returns: find_last_not_of(basic_string_view<charT, traits>(s, n), pos).
size_type find_last_not_of(const charT* s, size_type pos = npos) const;
Requires: s points to an array of at least traits::length(s) + 1 elements of charT.
Returns: find_last_not_of(basic_string_view<charT, traits>(s), pos).
size_type find_last_not_of(charT c, size_type pos = npos) const;
Returns: find_last_not_of(basic_string(1, c), pos).
basic_string substr(size_type pos = 0, size_type n = npos) const;
Throws: out_of_range if pos > size().
Effects: Determines the effective length rlen of the string to copy as the smaller of n and size() - pos.
Returns: basic_string(data()+pos, rlen).
int compare(basic_string_view<charT, traits> sv) const noexcept;
Effects: Determines the effective length rlen of the strings to compare as the smaller of size() and sv.size(). The function then compares the two strings by calling traits::compare(data(), sv.data(), rlen).
Returns: The nonzero result if the result of the comparison is nonzero. Otherwise, returns a value as indicated in Table [tab:strings.compare].
| Condition | Return Value |
| size() < sv.size() | < 0 |
| size() == sv.size() | 0 |
| size() > sv.size() | > 0 |
int compare(size_type pos1, size_type n1,
basic_string_view<charT, traits> sv) const;
Effects: Equivalent to:
return basic_string_view<charT, traits>(data(), size()).substr(pos1, n1).compare(sv);
template<class T>
int compare(size_type pos1, size_type n1, const T& t,
size_type pos2, size_type n2 = npos) const;
Effects: Equivalent to:
basic_string_view<charT, traits> sv = t; return basic_string_view<charT, traits>(data(), size()).substr(pos1, n1).compare(sv.substr(pos2, n2));
Remarks: This function shall not participate in overload resolution unless is_convertible_v<const T&, basic_string_view<charT, traits>> is true and is_convertible_v<const T&, const charT*> is false.
int compare(const basic_string& str) const noexcept;
Effects: Equivalent to: return compare(basic_string_view<charT, traits>(str));
int compare(size_type pos1, size_type n1,
const basic_string& str) const;
Effects: Equivalent to: return compare(pos1, n1, basic_string_view<charT, traits>(str));
int compare(size_type pos1, size_type n1,
const basic_string& str,
size_type pos2, size_type n2 = npos) const;
Effects: Equivalent to:
return compare(pos1, n1, basic_string_view<charT, traits>(str), pos2, n2);
int compare(const charT* s) const;
Returns: compare(basic_string(s)).
int compare(size_type pos, size_type n1,
const charT* s) const;
Returns: basic_string(*this, pos, n1).compare(basic_string(s)).
int compare(size_type pos, size_type n1,
const charT* s, size_type n2) const;
Returns: basic_string(*this, pos, n1).compare(basic_string(s, n2)).