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https://issues.apache.org/jira/browse/COLLECTIONS-667?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16309085#comment-16309085
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Gary Gregory commented on COLLECTIONS-667:
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{quote}
May want to size the ArrayList first to avoid having to expand the internal
buffer multiple times
{quote}
Agreed.
{quote}
Maybe create a new Collection object that keeps a pointer to each internal
Collection
{quote}
I am not sure I get this one, feel free to expand.
WRT the method name: "concat" feels weird to me because there is nothing like
it in the JRE.
Would "addAll()" be misleading since we would be calling "addAll()" on each
element? Maybe "forEachAddAll()"?
> CollectionUtils Concat Method
> -----------------------------
>
> Key: COLLECTIONS-667
> URL: https://issues.apache.org/jira/browse/COLLECTIONS-667
> Project: Commons Collections
> Issue Type: New Feature
> Components: Collection
> Reporter: BELUGA BEHR
> Priority: Minor
>
> Add a _concat_ method which returns a Collection of all the Collections in
> the argument list
> {code}
> public Collection concat(Collection c...)
> {code}
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