Type Alias UInt8DictionaryArray

pub type UInt8DictionaryArray = DictionaryArray<UInt8Type>;

A DictionaryArray indexed by u8

Example: Using collect

let array: UInt8DictionaryArray = vec!["a", "a", "b", "c"].into_iter().collect();
let values: Arc<dyn Array> = Arc::new(StringArray::from(vec!["a", "b", "c"]));
assert_eq!(array.keys(), &UInt8Array::from(vec![0, 0, 1, 2]));
assert_eq!(array.values(), &values);

See DictionaryArray for more information and examples

Aliased Type

struct UInt8DictionaryArray {
    data_type: DataType,
    keys: PrimitiveArray<UInt8Type>,
    values: Arc<dyn Array>,
    is_ordered: bool,
}

Fields

data_type: DataType

keys: PrimitiveArray<UInt8Type>

The keys of this dictionary. These are constructed from the buffer and null bitmap of data. Also, note that these do not correspond to the true values of this array. Rather, they map to the real values.

values: Arc<dyn Array>

Array of dictionary values (can by any DataType).

is_ordered: bool

Values are ordered.