pub fn is_character(&self) -> bool {
        match *self {
            Value::Character(_) => true,
            _ => false,
        }
    }
/// `is_character` returns true if the value is a character.
`is_character` returns true if the value is a character.
` is_character ` returns true if the value is a character .
pub fn is_character(&self) -> bool {
        match *self {
            Value::Character(_) => true,
            _ => false,
        }
    }
pub fn is_character ( & self ) -> bool { match * self { Value :: Character ( _ ) => true , _ => false , } }
`is_character` returns true if the value is a character.
` is_character ` returns true if the value is a character .
&self