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https://issues.apache.org/jira/browse/COLLECTIONS-366?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13591450#comment-13591450
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Thomas Neidhart commented on COLLECTIONS-366:
---------------------------------------------
Adding this new RangeList as a normal class in the list package would not fit
imho.
But it would be a nice addition to ListUtils:
{noformat}
public static List<Integer> range(final int from, final int to) {
return ListUtils.unmodifiableList(new RangeList(from, to));
}
{noformat}
The actual RangeList implementation will be an inner class of ListUtils and
greatly reduced in size by extending AbstractList. Thus only a few methods need
to be overwritten. By wrapping it with an UnmodifiableList we are sure it can
not be modified.
> A light-weighted list of integers
> ---------------------------------
>
> Key: COLLECTIONS-366
> URL: https://issues.apache.org/jira/browse/COLLECTIONS-366
> Project: Commons Collections
> Issue Type: New Feature
> Affects Versions: 3.2
> Reporter: Dmitry Katsubo
> Attachments: RangeList_fixed1.zip
>
>
> Sometimes there is a demand too have a list, that represents numbers within
> some range (say, [5..10]). If the range is big (millions of records),
> creating a dummy list that holds all instances of objects is too expensive.
> The provided implementation (attached to this issue) solves this problem.
> Nice to have in commons collections.
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