I noticed in the Java 6 source code for String that hashCode only caches values other than 0. The difference in performance is exhibited by the following snippet:
I have this hashCode function that I have been trying to implement with Eclipse but my T开发者_Python百科ests keep failing. I am trying to write a Hashcode function that returns that last 2 or 3 chars
If 开发者_运维问答the hashCode() method is not overridden, what will be the result of invoking hashCode() on any object in Java?In HotSpot JVM by default on the first invocation of non-overloaded Obje
How should I implement hashCode() and equals() for the following class in Java? class Emp { int empid ; // unique across all the departments
I am a newcomer to Scala. In 2.7.7, the following code abstract class C case class CC() extends C trait T
I have this test code: import java.util.*; class MapEQ { public static void main(String[] args) { Map<ToDos, String> m = new HashMap<ToDos, String>();
I have been trying to reason about the best way to handle whether it is generally good practice to implement hashcode and equals o开发者_如何学Pythonn entities (I mean entity in the general sense but
I want to put State objects (which are HashMaps with Character as key and State as Value into an ArrayList named allStates. Should I override the equals and hashCode methods here? Why? How?
The hash structures I am aware of - HashTable, HashSet & HashMap. Do they all use the bucket structure - ie when two hashcodes are similar exactly the s开发者_C百科ame one element does not overwr
I have been trying to understand the internal implementation of java.util.HashMap and java.util.HashSet.
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