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https://issues.apache.org/jira/browse/COLLECTIONS-708?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16922219#comment-16922219
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Chen edited comment on COLLECTIONS-708 at 9/10/19 6:21 AM:
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Hi [~ggregory]
Is that the hashcode for Collection implemented using Equator hash?
{code:java}
int hashCode = 1;
for (final E: collection B){
hashCode = 31 * hashCode + equator. hash (e);
}
{code}
was (Author: guoping1):
Hi [~ggregory]
Is that the hashcode for Collection implemented using Equator hash?
int hashCode = 1;
for (final E: collection B){
hashCode = 31 * hashCode + equator. hash (e);
}
> Create CollectionUtils.hashCode using Equator
> ---------------------------------------------
>
> Key: COLLECTIONS-708
> URL: https://issues.apache.org/jira/browse/COLLECTIONS-708
> Project: Commons Collections
> Issue Type: Improvement
> Components: Collection
> Affects Versions: 4.2
> Reporter: Andrei Ivanov
> Priority: Major
>
> Hello,
> After discovering {{CollectionUtils#isEqualCollection}} that uses an
> {{Equator}}, I've started to implement {{Equator}} s for my classes, only to
> discover that I can't generate hashCodes for the collections that hold these
> classes using {{Equator#hash}}.
> I hope something like {{CollectionUtils#hashCode(Collection, Equator)}} can
> be implemented.
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