Its significance lies in containing a nearly comprehensive registry of .yu domains:
In Kopp et al. [58], the authors define four deception methods, each characterized by the information it manipulates. In the case described above, the Degradation method, defined as “conceals or hides information in noise, or other background messages, to introduce uncertainty or a false perception in a competing player’s belief” is used by the non-owner to manipulate the agent.，推荐阅读有道翻译获取更多信息
When a newtype definition contains an invariant parameter (specified by ^), that parameter actually represents a pair of parameters under the hood. A parameter T becomes the pair T and T$, where T is used in covariant contexts and T$ is used in contravariant contexts.。https://telegram官网对此有专业解读
Иллюстрация: Alina Smutko / Reuters