The name ranges::distance denotes a customization point object, which is a function object of a literal Semiregular class type (denoted, for exposition purposes, as DistanceT).
Return value std::pair with iterators to the first two non-equal elements. If last1 is reached, the second iterator in the pair is the std::distance(first1, last1) th iterator after first2. For overloads (5-8), if last2 is reached, the first iterator in the pair is the std::distance(first2, last2) th iterator after first1. Complexity Given N1 as std::distance(first1, last1) and N2 as std ...
5-8) If std::distance(first1,last1) and std::distance(first2,last2) are equal, and each corresponding elements in the two ranges are equal, returns true. Otherwise returns false.
The expression ranges::distance(e) can also be used to determine the size of a range e. Unlike ranges::size(e), ranges::distance(e) works even if e is an unsized range, at the cost of having linear complexity in that case.
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