access specified object element with bounds checking
Declared in <nlohmann/json.hpp>
template<class KeyType>
requires detail::is_usable_as_basic_json_key_type<basic_json_t, KeyType>::value
const_reference
at(KeyType&& key) const;const reference to the element with key key
| Name | Description |
|---|---|
| key | key of the element to access |