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PO
primarykey
Id
4584641
data
AcceptedAnswerId
0
AnswerCount
0
ClosedDate
CommentCount
0
CommunityOwnedDate
CreationDate
2011-01-03T13:03:13.457
FavoriteCount
0
LastActivityDate
2011-01-03T13:46:58.290
LastEditDate
2011-01-03T13:46:58.290
LastEditorUserId
342852
OwnerUserId
342852
ParentId
4584393
PostTypeId
2
Score
1
ViewCount
0
LastEditorDisplayName
text
Body
Prototype (JavaScript framework) has a <a href="http://www.prototypejs.org/api/enumerable/zip" rel="nofollow">method <code>zip()</code></a> that does exactly what you need. That doesn't help you though, I know. Funny, I would have expected Groovy to have something similar, but I could not find anything in either the <a href="http://groovy.codehaus.org/groovy-jdk/java/util/Collection.html" rel="nofollow"><code>Collection</code></a> or <a href="http://groovy.codehaus.org/groovy-jdk/java/util/List.html" rel="nofollow"><code>List</code></a> class. Anyway, here is a not-too-pretty implementation of <code>zip()</code>: <pre><code>List.metaClass.zip = { List other, Closure cl -> List result = []; Iterator left = delegate.iterator(); Iterator right = other.iterator(); while(left.hasNext()&& right.hasNext()){ result.add( cl.call(left.next(), right.next()) ); } result; } </code></pre> And here it is in action: <pre><code>def list1 = [1, 1, 1] def list2 = [1, 1, 1] print (list1.zip(list2) {it1, it2 -> it1 + it2}) </code></pre> Output: <blockquote> [2, 2, 2] </blockquote> <hr> Of course you can also do it in a less generic way if you want to solve exactly your problem (and not implement a generic zip/map function) : <pre><code>List.metaClass.addValues = { List other -> List result = []; Iterator left = delegate.iterator(); Iterator right = other.iterator(); while(left.hasNext()&& right.hasNext()){ result.add( left.next() + right.next() ); } result; } def list1 = [1, 1, 1] def list2 = [1, 1, 1] print (list1.addValues(list2)) // Output again: [2, 2, 2] </code></pre>
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1. This table or related slice is empty.
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1. POSum the content of 2 list in Groovy
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1. PTAnswer
UserLastEditorUserId
1. USSean Patrick Floyd
UserOwnerUserId
1. USSean Patrick Floyd
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