Since there can be only one un-caught handler per process active at a time, the constructor should be invoked only once; hence, the reason for the singleton pattern.
因为每次只能有一个未捕获的处理程序处理一个活动进程，构造函数应该只被调用一次，因此要采用singleton模式。
As a general rule, add a PatternParameterDelegate statement to the constructor of each parameter class of the composed pattern.
为复合模式的每个参数类的构造函数增加PatternParameterDelegate声明已成为一种普遍规律。
Our pattern match then looks for Alice and Bob by inspecting the values passed to the constructor of the Person case class.
然后，我们的模式匹配通过检查传入的Personcase类的值来查找Alice和Bob。
Our pattern match then looks for Alice and Bob by inspecting the values passed to the constructor of the Person case class.
然后，我们的模式匹配通过检查传入的Personcase类的值来查找Alice和Bob。
应用推荐