pub fn is_nil(&self) -> bool {
        match *self {
            Value::Nil => true,
            _ => false,
        }
    }
/// Tests whether this value is nil
Tests whether this value is nil
Tests whether this value is nil
pub fn is_nil(&self) -> bool {
        match *self {
            Value::Nil => true,
            _ => false,
        }
    }
pub fn is_nil ( & self ) -> bool { match * self { Value :: Nil => true , _ => false , } }
Tests whether this value is nil
Tests whether this value is nil
&self
&self