java vs .Net GetHashCode and Equals for ArrayList
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Key: LUCENENET-284
URL: https://issues.apache.org/jira/browse/LUCENENET-284
Project: Lucene.Net
Issue Type: Bug
Reporter: Andrei Iliev
Attachments: ArrayList.patch
1)In java the hash code of a list (and ArrayList) is defined to be the result
of the following calc:
<code>
hashCode = 1;
Iterator i = list.iterator();
while (i.hasNext()) {
Object obj = i.next();
hashCode = 31*hashCode + (obj==null ? 0 : obj.hashCode());
}
</code>
In .Net it hash code of object itself.
2) In java two lists are defined to be equal if they contain the same elements
in the same order.
In .Net it compares the object references.
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