Function create_string_dataframe_from_map

src/memory/utils/mod.rs:620–632

Create a Polars DataFrame from a HashMap of String vectors. Specialized version of DataFrame creation for string data, commonly used for gene names, cell identifiers, and categorical analysis results. ## Parameters `map` - HashMap where keys are column names and values are String vectors ## Returns Polars DataFrame with string columns ## Usage Examples ```rust,ignore let mut gene_results = Has

(
    map: &HashMap<String, Vec<String>>,
)

/// - Creating lookup tables for identifiers
/// - Preparing categorical results for storage
pub fn create_string_dataframe_from_map(
    map: &HashMap<String, Vec<String>>,
) -> anyhow::Result<DataFrame> {
    let mut df = DataFrame::default();

    for (group, values) in map {
        let string_slice: Vec<&str> = values.iter().map(|s| s.as_str()).collect();
        let series = Series::new(group.into(), &string_slice);
        df.with_column(series)?;
    }

    Ok(df)
}

/// Convert a 2D array between numeric types.
///