c# - IKVM.net 不支持泛型(类型参数)吗？

Question

我静态地重新编译了一个经常使用泛型的 Java 库，比如 Collection<?> ，但发出的 .NET dll 仅使用 Collection ，不带类型参数。怎么会？

Answer 1

Java 泛型由 Java 编译器处理，并在编译时转换为非泛型版本。这与 .NET 不同，在 .NET 中，CLR 具有对类型参数的一流支持。在字节码级别，ArrayList<T>将只是一个简单的 ArrayList .

引用Java docs :

Generics are implemented by the Java compiler as a front-end conversion called erasure, which is the process of translating or rewriting code that uses generics into non-generic code (that is, maps the new syntax to the current JVM specification). In other words, this conversion erases all generic type information; all information between angle brackets is erased. For example, LinkedList<Integer> will become LinkedList. Uses of other type variables are replaced by the upper bound of the type variable (for example, Object), and when the resulting code is not type correct, a cast to the appropriate type is inserted.