operator== (ranges::zip_view:: iterator , ranges::zip_view:: sentinel )

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Ranges library
Range adaptors
template < bool OtherConst >

requires ( std:: sentinel_for <
ranges:: sentinel_t < /*maybe-const*/ < Const, Views >> ,
ranges:: iterator_t < /*maybe-const*/ < OtherConst, Views >>> && ... )
friend constexpr bool operator == ( const /*iterator*/ < OtherConst > & x,

const /*sentinel*/ & y ) ;
(since C++23)

Compares the underlying tuple of iterators of x with the underlying tuple of sentinels of y .

This function is not visible to ordinary unqualified or qualified lookup , and can only be found by argument-dependent lookup when zip_view:: sentinel <Const> is an associated class of the arguments.

The != operator is synthesized from operator== .

Parameters

x - iterator to compare
y - sentinel to compare

Return value

Let x. current_ denote the underlying tuple of iterators, and y. end_ denote the underlying tuple of sentinels.

Returns

  • true if at least one underlying iterator, obtained by expression equivalent to std :: get < i > ( x. current_ ) , evaluates equal (using an appropriate operator == ) to some underlying sentinel, obtained by expression equivalent to std :: get < i > ( y. end_ ) , for some index i in ranges 0 <= i < sizeof...(Views) ,
  • false otherwise.

Example