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std::ranges::drop_while_view<V,Pred>::drop_while_view

From cppreference.com
 
 
 
 
drop_while_view() = default;
(1) (since C++20)
constexpr drop_while_view( V base, Pred pred );
(2) (since C++20)

Constructs a drop_while_view.

1) Default constructor. Value-initializes the underlying view and the predicate. If Pred is not default_initializable, the drop_while_view does not hold a predicate, and subsequent use of the predicate (e.g. call of begin) is undefined behavior.
2) Move constructs the underlying view from base and the predicate from pred.

[edit] Parameters

base - underlying view
pred - predicate

[edit] Example

#include <array>
#include <iostream>
#include <ranges>
 
int main()
{
    constexpr std::array data{ 0, -1, -2, 3, 1, 4, 1, 5, };
 
    auto view = std::ranges::drop_while_view{
        data, [](int x) { return x <= 0; }
    };
 
    for (int x: view) {
        std::cout << x << ' ';
    }
    std::cout << '\n';
}

Output:

3 1 4 1 5