Overview

template<typename Container, typename Filter>
class pw::containers::FilteredView< Container, Filter >

pw::containers::FilteredView provides a view of a container with only elements that match the specified filter. This class is similar to C++20's std::ranges::filter_view.

FilteredView works with any container with an incrementable iterator. The back() function currently requires a bidirectional iterator.

To create a FilteredView, pass a container and a filter predicate, which may be any callable type including a function pointer, lambda, or pw::Function.

std::array<int, 99> kNumbers = {3, 1, 4, 1, ...};
 
for (int n : FilteredView(kNumbers, [](int v) { return v % 2 == 0; })) {
  PW_LOG_INFO("This number is even: %d", n);
}

Classes
class	iterator

Public Types
using	const_iterator = iterator

Public Member Functions
constexpr	FilteredView (const Container &container, const Filter &filter)

constexpr	FilteredView (const Container &container, Filter &&filter)

constexpr	FilteredView (FilteredView &&)=default

constexpr FilteredView &	operator= (FilteredView &&)=default

constexpr	FilteredView (const FilteredView &)=delete

constexpr FilteredView &	operator= (const FilteredView &)=delete

const auto &	operator[] (size_t index) const

const auto &	front () const

const auto &	back () const

size_t	size () const

bool	empty () const

iterator	begin () const

iterator	end () const

The documentation for this class was generated from the following file:

pw_containers/public/pw_containers/filtered_view.h

Overview

Classes

Public Types

Public Member Functions