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get_optimal_row_encoding_layout

polars::prelude::row_encode

Function get_optimal_row_encoding_layout 

Source 
pub fn get_optimal_row_encoding_layout(
    by: &[Column],
    others: &[&[Column]],
    opts: &[RowEncodingOptions],
) -> RowEncodingLayout
Expand description

The [RowEncodingOutput::Optimal] layout for these columns, with each column encoding nulls if it has nulls in by or in any of others.