24 Ranges library [ranges]

24.3 Range access [range.access]

24.3.7 ranges​::​crbegin [range.access.crbegin]

The name ranges​::​crbegin denotes a customization point object.
The expression ranges​::​​crbegin(E) for some subexpression E of type T is expression-equivalent to:
  • ranges​::​​rbegin(static_­cast<const T&>(E)) if E is an lvalue.
  • Otherwise, ranges​::​rbegin(static_­cast<const T&&>(E)).
Note
:
Whenever ranges​::​crbegin(E) is a valid expression, its type models input_­or_­output_­iterator.
— end note
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