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std::basic_string_view::find

constexpr size_type find(basic_string_view v, size_type pos = 0) const;
(1) (since C++17)
constexpr size_type find(CharT c, size_type pos = 0) const;
(2) (since C++17)
constexpr size_type find(const CharT* s, size_type pos, size_type count) const;
(3) (since C++17)
constexpr size_type find(const CharT* s, size_type pos = 0) const;
(4) (since C++17)

Finds the first substring equal to the given character sequence.

1) Finds the first occurence of v in this view, starting at position pos.
2) Equivalent to find(basic_string_view(&c, 1), pos).
3) Equivalent to find(basic_string_view(s, count), pos).
4) Equivalent to find(basic_string_view(s), pos).

Parameters

v - view to search for
pos - position at which to start the search
count - length of substring to search for
s - pointer to a character string to search for
ch - character to search for

Return value

Position of the first character of the found substring, or npos if no such substring is found.

Exceptions

1-2)
noexcept specification:
noexcept

Complexity

O(size() * v.size()) at worst.

See also

find the last occurrence of a substring
(public member function)
find first occurrence of characters
(public member function)
find last occurrence of characters
(public member function)
find first absence of characters
(public member function)
find last absence of characters
(public member function)

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