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Dictionary

This documentation reflects Arrow JS v4.0. Needs to be updated for the new Arrow API in v9.0 +.

A Dictionary stores index-to-value maps for dictionary encoded columns.

Fields​

indices: V<TKey> readonly​

dictionary: Vector<T> readonly​

Static Methods​

Dictionary.from(values: Vector, indices: TKey, keys: ArrayLike<number> | TKey['TArray']) : Dictionary​

Methods​

constructor(data: Data)​

reverseLookup(value: T): number​

getKey(idx: number): TKey['TValue'] | null​

getValue(key: number): T['TValue'] | null​

setKey(idx: number, key: TKey['TValue'] | null): void​

setValue(key: number, value: T['TValue'] | null): void​