degree of circularity meaning in English

圆形度

In reality , any definition of thread safety is going to have a certain degree of circularity , as it must appeal to the class s specification - which is an informal , prose description of what the class does , its side effects , which states are valid or invalid , invariants , preconditions , postconditions , and so on . constraints on an object s state imposed by the specification apply only to the externally visible state - that which can be observed by calling its public methods and accessing its public fields - rather than its internal state , which is what is actually represented in its private fields
实际上，所有线程安全的定义都有某种程序的循环，因为它必须符合类的规格说明- -这是对类的功能、其副作用、哪些状态是有效和无效的、不可变量、前置条件、后置条件等等的一种非正式的松散描述(由规格说明给出的对象状态约束只应用于外部可见的状态，即那些可以通过调用其公共方法和访问其公共字段看到的状态，而不应用于其私有字段中表示的内部状态) 。