im new to scala and ran into the following problem: I want to get a subcollection of an existing collection that only contains elements of a specific type. The following works:
This question already has answers here: Closed 12 years ago. Possible Duplicate: Is this valid Java? I was surprised to discover the Java class below compiles.
Is there a 开发者_如何转开发way to get Class object from the type variable in Java generic class? Something like that:
import java.lang.reflect.Array; public class PrimitiveArrayGeneric { static <T> T[] genericArrayNewInstance(Class<T> componentType) {
Given the following code: public void example(Object o) { if(o instanceof List<MyType>) //do something
This question already has answers here: Instantiating generics type in java (12 answers) 开发者_开发问答
Can anyone re-write this code to do the same thing but without any compiler warnings please:- object TestTypeErasure {
There\'s a less common C++ idiom that I\'ve used to good effect a few times in the past. I just can\'t seem to remember if it has a generally used name to describe it.
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