Returns a reference to the stored predicate pred_.

If *this does not store a predicate (e.g. an exception is thrown on the assignment to *this, which copy-constructs or move-constructs a Pred), the behavior is undefined.

Parameters

(none)

Return value

A reference to the stored predicate.

Example

#include <ranges>

int main()
{
    static constexpr int a[]{1, 2, 3, 4, 5};
    constexpr auto v = a | std::views::take_while([](int x){ return x < 4; });
    const auto pred = v.pred();
    static_assert(pred(3));
}

See also