using array_t = ArrayType<basic_json, AllocatorType<basic_json>>;
The type used to store JSON arrays.
RFC 8259 describes JSON arrays as follows:
An array is an ordered sequence of zero or more values.
To store objects in C++, a type is defined by the template parameters explained below.
ArrayType : container type to store arrays (e.g., std::vector or std::list)
AllocatorType : the allocator to use for objects (e.g., std::allocator)
With the default values for ArrayType (std::vector) and AllocatorType (std::allocator), the default value for array_t is:
std::vector< basic_json, // value_type std::allocator<basic_json> // allocator_type >
RFC 8259 specifies:
An implementation may set limits on the maximum depth of nesting.
In this class, the array's limit of nesting is not explicitly constrained. However, a maximum depth of nesting may be introduced by the compiler or runtime environment. A theoretical limit can be queried by calling the max_size function of a JSON array.
Arrays are stored as pointers in a basic_json type. That is, for any access to array values, a pointer of type #!cpp array_t* must be dereferenced.