fn new(dic: Dictionary<Unique>) -> Self {
        IntoIter {
            dic,
            last_key: None,
        }
    }
/// Create an Iterator by consuming a unique Dictionary.
Create an Iterator by consuming a unique Dictionary.
Create an Iterator by consuming a unique Dictionary .
fn new(dic: Dictionary<Unique>) -> Self {
        IntoIter {
            dic,
            last_key: None,
        }
    }
fn new ( dic : Dictionary < Unique > ) -> Self { IntoIter { dic , last_key : None , } }
Create an Iterator by consuming a unique Dictionary.
Create an Iterator by consuming a unique Dictionary .
dic
Dictionary<Unique>