NAME

operator==,!=,<,<=,>,>=(std::basic_string_view) - operator==,!=,<,<=,>,>=(std::basic_string_view)

Synopsis


Defined in header <string_view>
template< class CharT, class Traits >
constexpr bool operator==( basic_string_view <CharT,Traits> lhs, (1) (since C++17)
basic_string_view <CharT,Traits> rhs ) noexcept;
template< class CharT, class Traits >
constexpr bool operator!=( basic_string_view <CharT,Traits> lhs, (2) (since C++17)
basic_string_view <CharT,Traits> rhs ) noexcept;
template< class CharT, class Traits >
constexpr bool operator<( basic_string_view <CharT,Traits> lhs, (3) (since C++17)
basic_string_view <CharT,Traits> rhs ) noexcept;
template< class CharT, class Traits >
constexpr bool operator<=( basic_string_view <CharT,Traits> lhs, (4) (since C++17)
basic_string_view <CharT,Traits> rhs ) noexcept;
template< class CharT, class Traits >
constexpr bool operator>( basic_string_view <CharT,Traits> lhs, (5) (since C++17)
basic_string_view <CharT,Traits> rhs ) noexcept;
template< class CharT, class Traits >
constexpr bool operator>=( basic_string_view <CharT,Traits> lhs, (6) (since C++17)
basic_string_view <CharT,Traits> rhs ) noexcept;


Compares two views.
All comparisons are done via the compare() member function (which itself is defined in terms of Traits::compare()):


* Two views are equal if both the size of lhs and rhs are equal and each character in lhs has an equivalent character in rhs at the same position.


* The ordering comparisons are done lexicographically -- the comparison is performed by a function equivalent to std::lexicographical_compare.


The implementation shall provide sufficient additional constexpr and noexcept overloads of these functions so that a basic_string_view<CharT,Traits> object sv may be compared to another object t with an implicit conversion to basic_string_view<CharT,Traits>, with semantics identical to comparing sv and basic_string_view<CharT,Traits>(t).

Parameters


lhs, rhs - views to compare

Return value


true if the corresponding comparison holds, false otherwise.

Complexity


Linear in the size of the views.