fn debug_segments_description(map: &CharacterMap, segments: &[Option<Segment>]) -> String {
    let segments_desc = segments
        .iter()
        .map(|x| {
            if let Some(segment) = x {
                (segment.start..=segment.end)
                    .map(|x| format!("{}", map[&x]))
                    .join(",")
            } else {
                "_".to_string()
            }
        })
        .collect::<Vec<String>>()
        .join(" | ");
    let strategies_desc = segments
        .iter()
        .map(|x| {
            if let Some(segment) = x {
                format!("{:?}", segment.strategy)
            } else {
                "_".to_string()
            }
        })
        .collect::<Vec<String>>()
        .join("");
    let sizes = segments
        .iter()
        .flatten()
        .map(Segment::size)
        .collect::<Vec<usize>>();
    let sizes_desc = sizes
        .iter()
        .map(|&x| {
            if x != 0 {
                format!("{}", x)
            } else {
                "_".to_string()
            }
        })
        .collect::<Vec<String>>()
        .join(" + ");
    let size_sum: usize = sizes.iter().sum();

    format!(
        "{}\n[{} = {}] ({})",
        segments_desc, size_sum, sizes_desc, strategies_desc
    )
}
/// Returns a debug description of a slice of segments.
///
/// This function is **not optimized for runtime performance or memory efficiency**.
/// Use it for debugging only.
///
/// The format is a follows:
///
/// ```text
/// 1,2,3 | 6,5,4 | _ | 8 | 10,9
/// [42 = 8 + 14 + _ + 8 + 12] (OX_OX)
/// ```
///
/// Segments are separated by a vertical bar (`|`) and the glyph ids of each segment are comma-separated.
/// `None` values are displayed as an underscore (`_`).
/// The size in bytes of the segmentation as well as the individual sizes of each segment are set in square brackets.
/// The strategies are set in parentheses: `O` indicates the *shift* strategy; `X` indicates the *mix* segment.
///
/// The `map` parameter is used to resolve the glyph ids for each segment.
Returns a debug description of a slice of segments.
This function is **not optimized for runtime performance or memory efficiency**.
Use it for debugging only.

The format is a follows.



Segments are separated by a vertical bar (`|`) and the glyph ids of each segment are comma-separated.
`None` values are displayed as an underscore (`_`).
The size in bytes of the segmentation as well as the individual sizes of each segment are set in square brackets.
The strategies are set in parentheses: `O` indicates the *shift* strategy; `X` indicates the *mix* segment.

The `map` parameter is used to resolve the glyph ids for each segment.
Returns a debug description of a slice of segments . This function is ** not optimized for runtime performance or memory efficiency ** . Use it for debugging only . The format is a follows . Segments are separated by a vertical bar ( ` | ` ) and the glyph ids of each segment are comma - separated . ` None ` values are displayed as an underscore ( ` _ ` ) . The size in bytes of the segmentation as well as the individual sizes of each segment are set in square brackets . The strategies are set in parentheses : ` O ` indicates the * shift * strategy ; ` X ` indicates the * mix * segment . The ` map ` parameter is used to resolve the glyph ids for each segment .
fn debug_segments_description(map: &CharacterMap, segments: &[Option<Segment>]) -> String {
    let segments_desc = segments
        .iter()
        .map(|x| {
            if let Some(segment) = x {
                (segment.start..=segment.end)
                    .map(|x| format!("{}", map[&x]))
                    .join(",")
            } else {
                "_".to_string()
            }
        })
        .collect::<Vec<String>>()
        .join(" | ");
    let strategies_desc = segments
        .iter()
        .map(|x| {
            if let Some(segment) = x {
                format!("{:?}", segment.strategy)
            } else {
                "_".to_string()
            }
        })
        .collect::<Vec<String>>()
        .join("");
    let sizes = segments
        .iter()
        .flatten()
        .map(Segment::size)
        .collect::<Vec<usize>>();
    let sizes_desc = sizes
        .iter()
        .map(|&x| {
            if x != 0 {
                format!("{}", x)
            } else {
                "_".to_string()
            }
        })
        .collect::<Vec<String>>()
        .join(" + ");
    let size_sum: usize = sizes.iter().sum();
    format!(
        "{}\n[{} = {}] ({})",
        segments_desc, size_sum, sizes_desc, strategies_desc
    )
}
fn debug_segments_description ( map : & CharacterMap , segments : & [ Option < Segment > ] ) -> String { let segments_desc = segments . iter ( ) . map ( | x | { if let Some ( segment ) = x { ( segment . start ..= segment . end ) . map ( | x | format ! ( " " map [ x ] ) ) . join ( " " ) } else { " " . to_string ( ) } } ) . collect :: < Vec < String > > ( ) . join ( " " ) ; let strategies_desc = segments . iter ( ) . map ( | x | { if let Some ( segment ) = x { format ! ( " " segment strategy ) } else { " " . to_string ( ) } } ) . collect :: < Vec < String > > ( ) . join ( " " ) ; let sizes = segments . iter ( ) . flatten ( ) . map ( Segment :: size ) . collect :: < Vec < usize > > ( ) ; let sizes_desc = sizes . iter ( ) . map ( | & x | { if x != 0 { format ! ( " " x ) } else { " " . to_string ( ) } } ) . collect :: < Vec < String > > ( ) . join ( " " ) ; let size_sum : usize = sizes . iter ( ) . sum ( ) ; format ! ( " \n " segments_desc size_sum sizes_desc strategies_desc ) }
Returns a debug description of a slice of segments.
Returns a debug description of a slice of segments .
map
&CharacterMap
segments
&[Option<Segment>]
map
&CharacterMap
segments
&[Option<Segment>]