::relaxed>, using base = boost::type_erasure::any::_self>,has_get_position (),const boost::type_erasure::_self>,has_get_scene_root,boost::type_erasure(),const boost::type_erasure::_self
org.apache.flink.api.common.functions.InvalidTypesException: The return type of function 'Custom Source' could not be determined automatically, due to type erasureThis is most likely a type erasure problem.
通过使用泛型,我们可以在编译过程中检测到任何可能的情况。例如,//list.add(new Integer(45)); This will cause compilation error.list.add("bus");String vehicle = list.get(0); //compiler-generated cast
当我们在Java1.5之前使用
我正在学习泛型在Java中是如何工作的,我正在阅读Deitel & Deitel "Java - how to Program“一书中的练习,以获得这个主题的一些熟练程度。我对以下项目的结果感到困惑:* Exercise 20.7 from "Java - How To Program". This program will implement a * the passed in references. I sus