pub fn with_label_format(mut self, label_format: Option<&str>) -> Self {
        self.label_format = label_format.map(|x| {
            CString::new(x)
                .unwrap_or_else(|_| panic!("Format label string has internal null bytes: {}", x))
        });
        self
    }
/// Specify the label format for hovered data points.. `None` means no label is shown.
///
/// # Panics
/// Will panic if the label format string contains internal null bytes.
Specify the label format for hovered data points.. `None` means no label is shown.
Specify the label format for hovered data points .. ` None ` means no label is shown .
pub fn with_label_format(mut self, label_format: Option<&str>) -> Self {
        self.label_format = label_format.map(|x| {
            CString::new(x)
                .unwrap_or_else(|_| panic!("Format label string has internal null bytes: {}", x))
        });
        self
    }
pub fn with_label_format ( mut self , label_format : Option < & str > ) -> Self { self . label_format = label_format . map ( | x | { CString :: new ( x ) . unwrap_or_else ( | _ | panic ! ( " " x ) ) } ) ; self }
Specify the label format for hovered data points.. `None` means no label is shown.
Specify the label format for hovered data points .. ` None ` means no label is shown .
mut self
label_format
Option<&str>
mut self
label_format
Option<&str>
panics
Will panic if the label format string contains internal null bytes.
Will panic if the label format string contains internal null bytes .