Function resolve_reference_group

src/memory/processing/diffexp/mod.rs:850–869

Resolve the reference group specification to an actual group name or "rest" mode. Handles three cases: - Specific group name: validates the group exists - "rest": use all cells not in the test group as reference - None: automatically use "rest" mode # Arguments `all_groups` - Complete list of available groups `reference` - User-specified reference group or None # Returns - `Some(group_name)` fo

(
    all_groups: &[String],
    reference: Option<&str>,
)

/// - `Some(group_name)` for specific reference group
/// - `None` for "rest" mode (use all other cells)
fn resolve_reference_group(
    all_groups: &[String],
    reference: Option<&str>,
) -> anyhow::Result<Option<String>> {
    match reference {
        Some(ref_group) => {
            if ref_group == "rest" {
                Ok(None)
            } else {
                let ref_group_string = ref_group.to_string();
                if all_groups.contains(&ref_group_string) {
                    Ok(Some(ref_group_string))
                } else {
                    Err(anyhow::anyhow!("Reference group '{}' not found", ref_group))
                }
            }
        }
        None => Ok(None),
    }
}

/// Get row indices for cells belonging to a specific group.
///