operator==,!=,<,<=,>,>=(std::experimental::basic_string_view)
Defined in header <experimental/string_view>
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Compare two basic_string_view objects |
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template< class CharT, class Traits > constexpr bool operator==( basic_string_view <CharT,Traits> lhs, |
(1) | (library fundamentals TS) |
template< class CharT, class Traits > constexpr bool operator!=( basic_string_view <CharT,Traits> lhs, |
(2) | (library fundamentals TS) |
template< class CharT, class Traits > constexpr bool operator<( basic_string_view <CharT,Traits> lhs, |
(3) | (library fundamentals TS) |
template< class CharT, class Traits > constexpr bool operator<=( basic_string_view <CharT,Traits> lhs, |
(4) | (library fundamentals TS) |
template< class CharT, class Traits > constexpr bool operator>( basic_string_view <CharT,Traits> lhs, |
(5) | (library fundamentals TS) |
template< class CharT, class Traits > constexpr bool operator>=( basic_string_view <CharT,Traits> lhs, |
(6) | (library fundamentals TS) |
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)
.
[edit] Parameters
lhs, rhs | - | views to compare |
[edit] Return value
true if the corresponding comparison holds, false otherwise.
[edit] Complexity
Linear in the size of the views.