Return whether the held object contains a member with key.
Declared in <bdljsn_json.h>
bool
contains(std::string_view const& key) const;Return true if the JsonObject held by this Json object contains a member whose key is equivalent to the specified key, and return false otherwise. The behavior is undefined unless true == isObject().
true if a member with the specified key is present, and false otherwise
| Name | Description |
|---|---|
| key | UTF-8 member name |