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json/api/basic_json/crend.md
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2026-10-03 05:43:12 +00:00

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nlohmann::basic_json::crend

const_reverse_iterator crend() const noexcept;

Returns an iterator to the reverse-end; that is, one before the first element. This element acts as a placeholder, attempting to access it results in undefined behavior.

Illustration from cppreference.com

Return value

reverse iterator to the element following the last element

Exception safety

No-throw guarantee: this member function never throws exceptions.

Complexity

Constant.

Examples

??? example

The following code shows an example for `crend()`.

```cpp
--8<-- "examples/crend.cpp"
```

Output:

```json
--8<-- "examples/crend.output"
```

See also

  • crbegin returns a const reverse iterator to the last element
  • rend returns a reverse iterator to one before the first element
  • cend returns a const iterator to one past the last element
  • Iterators - the article on iterators

Version history

  • Added in version 1.0.0.