[range.refinements]

contiguous_range additionally requires that the ranges::data customization point object ([range.prim.data]) is usable with the range.

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template<class T>
  concept contiguous_range =
    random_access_range<T> && contiguous_iterator<iterator_t<T>> &&
    requires(T& t) {
      { ranges::data(t) } -> same_as<add_pointer_t<range_reference_t<T>>;
    };

Given an expression t such that decltype(t)) is T&, T models contiguous_range only if to_address(ranges::begin(t)) == ranges::data(t) is true.

The common_range concept specifies requirements of a range type for which ranges::begin and ranges::end return objects of the same type.

[Example 1:

The standard containers ([containers]) model common_range .

— end example]

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template<class T>
  concept common_range =
    range<T> && same_as<iterator_t<T>, sentinel_t<T>>;

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template<class R>
  constexpr bool is-initializer-list = see below;               / exposition only

For a type R, is-initializer-list<R> is true if and only if remove_cvref_t<R> is a specialization of initializer_list.

The viewable_range concept specifies the requirements of a range type that can be converted to a view safely.

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template<class T>
  concept viewable_range =
    range<T> &&
    ((view<remove_cvref_t<T>> && constructible_from<remove_cvref_t<T>, T>) ||
     (!view<remove_cvref_t<T>> &&
      (is_lvalue_reference_v<T> || (movable<remove_reference_t<T>> && !is-initializer-list<T>);

The constant_range concept specifies the requirements of a range type whose elements are not modifiable.

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template<class T>
  concept constant_range =
    input_range<T> && constant-iterator<iterator_t<T>>;

The exposition-only concept sized-random-access-range specifies the requirements of a range type that is sized and allows random access to its elements.

🔗

template<class T>
  concept sized-random-access-range =           / exposition only
    random_access_range<T> && sized_range<T>;

[Note 1:

This concept constrains some parallel algorithm overloads; see [algorithms].

— end note]