polars::chunked_array::ops

Trait ChunkApproxNUnique

Source 
pub trait ChunkApproxNUnique {
    // Required method
    fn approx_n_unique(&self) -> u32;
}

Required Methods§

Source

fn approx_n_unique(&self) -> u32

Implementors§

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impl<T> ChunkApproxNUnique for ChunkedArray<T>
where T: PolarsDataType, <T as PolarsDataType>::Physical<'a>: for<'a> TotalHash + for<'a> TotalEq + for<'a> Copy + for<'a> ToTotalOrd, <Option<<T as PolarsDataType>::Physical<'a>> as ToTotalOrd>::TotalOrdItem: for<'a> Hash + for<'a> Eq,