std::basic_string_view<CharT,Traits>::compare

 

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basic_string

basic_string_view (C++17)

char_traits

 

std::basic_string_view

Member functions basic_string_view::basic_string_view    basic_string_view::operator= Iterators basic_string_view::beginbasic_string_view::cbegin basic_string_view::endbasic_string_view::cend basic_string_view::rbeginbasic_string_view::crbegin basic_string_view::rendbasic_string_view::crend Capacity basic_string_view::sizebasic_string_view::length basic_string_view::max_size basic_string_view::empty Operations basic_string_view::copy basic_string_view::substr basic_string_view::compare basic_string_view::starts_with (C++20) basic_string_view::ends_with (C++20) basic_string_view::contains (C++23) basic_string_view::find basic_string_view::rfind basic_string_view::find_first_of basic_string_view::find_last_of basic_string_view::find_first_not_of basic_string_view::find_last_not_of

Element access basic_string_view::at basic_string_view::operator[] basic_string_view::front basic_string_view::back basic_string_view::data Modifiers basic_string_view::remove_prefix basic_string_view::remove_suffix basic_string_view::swap Constants basic_string_view::npos Non-member functions operator==operator!=operator<operator>operator<=operator>=operator<=> (until C++20)(until C++20)(until C++20)(until C++20)(until C++20)(C++20) operator<< operator""sv Helper classes hash<std::string_view>hash<std::wstring_view>hash<std::u8string_view>hash<std::u16string_view>hash<std::u32string_view> (C++20) Deduction guides (C++20)

 

constexpr int compare( basic_string_view v ) const noexcept;	(1)	(since C++17)
constexpr int compare( size_type pos1, size_type count1, basic_string_view v ) const;	(2)	(since C++17)
constexpr int compare( size_type pos1, size_type count1, basic_string_view v, size_type pos2, size_type count2 ) const;	(3)	(since C++17)
constexpr int compare( const CharT* s ) const;	(4)	(since C++17)
constexpr int compare( size_type pos1, size_type count1, const CharT* s ) const;	(5)	(since C++17)
constexpr int compare( size_type pos1, size_type count1, const CharT* s, size_type count2 ) const;	(6)	(since C++17)

Compares two character sequences.

1) The length rlen of the sequences to compare is the smaller of size() and v.size(). The function compares the two views by calling traits::compare(data(), v.data(), rlen), and returns a value according to the following table:

Condition		Result	Return value
Traits::compare(data(), v.data(), rlen) < 0		this is less than v	< 0
Traits::compare(data(), v.data(), rlen) == 0	size() < v.size()	this is less than v	< 0
	size() == v.size()	this is equal to v