hashcode
Why does a hashtable degenerate into a Linked List when a hashcode() implementation returns a constant value?
// The worst possible legal hash function - never use! @Override public int hashCode() { return 42; } It’s legal because it ensures that equal objects have the same hash code. It’s atrocious beca[详细]
2023-04-12 23:51 分类：问答Scala Set Hashcode
Assume we have three sets of strings in Scala. One has elements A,B,C. Two has elements B,C,D. And Three has elements J,K,I.[详细]
2023-04-12 04:57 分类：问答What are ways to keep hashCode/equals consistent with the business definition of the class?
Object javadocs and Josh Bloch tell us a great deal about how hashCode/equals should be implemented, and good IDEs will handle fields of various types correctly.Some discussion about all that is here.[详细]
2023-04-11 14:39 分类：问答Map<Pattern, Object> fails to find key
I have the following code: List<Pattern> patterns = Lists.newArrayList(Pattern.compile(\"blah\"), Pattern.compile(\"blah2\"));[详细]
2023-04-11 02:11 分类：问答Using auto generated id of Hibernate entity object in the equals and hashcode methods
Lovely equals and hashcode, all the theory is here and also here I have taken the decision to use the auto-generated id within equals() and hashcode() in a number of my hibernate entity/domain object[详细]
2023-04-08 17:57 分类：问答Hashcode function
My hashcode function for string is as follows hashVal=(127*hashVal+key.charAt(i))%1690879开发者_运维百科9[详细]
2023-04-07 01:42 分类：问答Java: Use hashCode() inside of equals() for convenience?
Consider the following test case, is it a bad practice to use the hashCode method inside of equals as a convenient shortcut?[详细]
2023-04-05 08:04 分类：问答creating hashCode and equals for Address
I need to implement equals() and hashCode() for an A开发者_开发百科ddress class. I believe,the non null fields are taken to determine hashCode() and equals().In my application,Any of the fields excep[详细]
2023-04-05 06:27 分类：问答What is the standard idiom for implementing equals and hashCode in Scala?
What is the standard idiom for implementing the equals and hashCode methods in Scala? I know the preferred 开发者_开发技巧approach is discussed in Programming in Scala, but I don\'t currently have a[详细]
2023-04-04 10:57 分类：问答Hibernate: Should I include the 'version' field to hashcode() and equals() methods
I know that when overriding hashcode() and equals() of my persistent entities I should not include ID and only include the meaningful properties that uniquely identify the object.[详细]
2023-04-03 19:34 分类：问答
加载中,请稍侯......