Details
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Type:
Improvement
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Status:
Closed
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Priority:
Major
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Resolution: Fixed
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Affects Version/s: 1.8.5
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Fix Version/s: 1.8.6, 2.0-beta-3
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Component/s: None
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Labels:None
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Number of attachments :
Description
I have often found a need for collating or partitioning a List into a List of sub-lists of a given size.
This question has been asked on StackOverflow a couple of times as well
ie:
[1,2,3,4,5].collate( 3 ) == [ [ 1, 2, 3 ], [ 4, 5 ] ]
This could be chained to generate a multi-dimensional list of lists, ie:
(1..9).collate( 3 ).collate( 2 ) == [ [ [1,2,3], [4,5,6] ],
[ [7,8,9] ] ]
And this generated my first pull request of (hopefully) many:
https://github.com/groovy/groovy-core/pull/22