ranges::views::ints_fn Struct Reference

#include <range/v3/view/iota.hpp>

Inheritance diagram for ranges::views::ints_fn:

Public Member Functions
template<typename Val > requires integral<Val>
constexpr iota_view< Val, Val >	operator() (Val from, Val to) const
template<typename Val > requires integral<Val>
constexpr iota_view< Val >	operator() (Val value) const
template<typename Val > requires integral<Val>
constexpr iota_view< Val >	operator() (Val value, unreachable_sentinel_t) const
Public Member Functions inherited from ranges::iota_view< int >
constexpr	iota_view (int from)
constexpr	iota_view (meta::id_t< int > from, meta::id_t< To > to)
Public Member Functions inherited from ranges::view_facade< iota_view< int, To >, same_as< To, unreachable_sentinel_t > ? infinite :std::is_integral< int >::value &&std::is_integral< To >::value ? finite :unknown >
constexpr auto	begin () -> detail::facade_iterator_t< D >
	Let d be static_cast<Derived &>(*this). Let b be std::as_const(d).begin_cursor() if that expression is well-formed; otherwise, let b be d.begin_cursor(). Let B be the type of b. More...
constexpr auto	begin () const -> detail::facade_iterator_t< D const >
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
constexpr auto	end () -> detail::facade_sentinel_t< D >
	Let d be static_cast<Derived &>(*this). Let e be std::as_const(d).end_cursor() if that expression is well-formed; otherwise, let e be d.end_cursor(). Let E be the type of e. More...
constexpr auto	end () const -> detail::facade_sentinel_t< D const >
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
Public Member Functions inherited from ranges::view_interface< iota_view< int, To >, Cardinality >
constexpr auto	empty () const noexcept -> bool
	Test whether a range can be empty:
&&!detail ::has_fixed_size_< Cardinality > &&forward_range< D< True > const > constexpr bool	empty () const noexcept(noexcept(bool(ranges::begin(std::declval< D< True > const & >())==ranges::end(std::declval< D< True > const & >()))))
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
&&Cardinality< 0) &&(Cardinality !=infinite) &&(!forward_range< D< True > >) &&sized_range< D< True > > constexpr bool empty() noexcept(noexcept(bool(ranges::size(std::declval< D< True > & >())==0))) { return ranges::size(derived())==0;} template< bool True=true > &&Cardinality< 0) &&(Cardinality !=infinite) &&(!forward_range< D< True > const >) &&sized_range< D< True > const > constexpr bool empty() const noexcept(noexcept(bool(ranges::size(std::declval< D< True > const & >())==0))) { return ranges::size(derived())==0;} template< bool True=true > &&!detail ::has_fixed_size_< Cardinality > &&forward_range< D< True > > constexpr bool	empty () noexcept(noexcept(bool(ranges::begin(std::declval< D< True > & >())==ranges::end(std::declval< D< True > & >()))))
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
&&detail::can_empty_< D< True > const > constexpr	operator bool () const noexcept(noexcept(ranges::empty(std::declval< D< True > const & >())))
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
&&detail::can_empty_< D< True > > constexpr	operator bool () noexcept(noexcept(ranges::empty(std::declval< D< True > & >())))
view_interface &	operator= (view_interface &&)=default
view_interface &	operator= (view_interface const &)=default
	view_interface (view_interface &&)=default
	view_interface (view_interface const &)=default

Related Functions
(Note that these are not member functions.)
constexpr ints_fn	ints {}

Additional Inherited Members
Protected Types inherited from ranges::view_interface< iota_view< int, To >, Cardinality >
using	D = meta::invoke< detail::dependent_< B >, iota_view< int, To > >
Protected Member Functions inherited from ranges::view_facade< iota_view< int, To >, same_as< To, unreachable_sentinel_t > ? infinite :std::is_integral< int >::value &&std::is_integral< To >::value ? finite :unknown >
constexpr view_as_cursor	begin_cursor () const
constexpr default_sentinel_t	end_cursor () const
Protected Member Functions inherited from ranges::view_interface< iota_view< int, To >, Cardinality >
constexpr iota_view< int, To > const &	derived () const noexcept
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
constexpr iota_view< int, To > &	derived () noexcept
Protected Attributes inherited from ranges::view_facade< iota_view< int, To >, same_as< To, unreachable_sentinel_t > ? infinite :std::is_integral< int >::value &&std::is_integral< To >::value ? finite :unknown >
friend	range_access

Detailed Description

ranges::views::ints

The ints view returns a range of monotonically increasing ints.

Example

#include <iostream>
#include <vector>
#include <range/v3/view/iota.hpp>
 
int main()
{
    auto numbers = ranges::views::ints(3, 7);
 
    std::cout << numbers << '\n';
}

Output

[3,4,5,6]

Syntax

auto output_range = ranges::views::ints(lower_bound, upper_bound);

Parameters

lower_bound

• Optional lower bound

upper_bound

• Exclusive upper bound
• Required when lower_bound is specified
  • To create an infinite range with a lower_bound, use ranges::unreachable as the upper_bound

output_range

• Range of monotonically increasing ints
• When an upper_bound is not specified, the range is quasi-infinite