polars_arrow::compute::cast

Function binary_to_dictionary

Source 
pub fn binary_to_dictionary<O: Offset, K: DictionaryKey>(
    from: &BinaryArray<O>,
) -> PolarsResult<DictionaryArray<K>>
Available on crate feature compute_cast only.
Expand description

Cast BinaryArray to DictionaryArray, also known as packing.

ยงErrors

This function errors if the maximum key is smaller than the number of distinct elements in the array.