let line_gauge = |
#filled_style: &[Style, null] = &null,
#filled_symbol: &[string, null] = &null,
#label: &[Line, null] = &null,
#style: &[Style, null] = &null,
#unfilled_style: &[Style, null] = &null,
#unfilled_symbol: &[string, null] = &null,
ratio: &f64
| -> Tui `LineGauge({
filled_style,
filled_symbol,
label,
ratio,
style,
unfilled_style,
unfilled_symbol
})