StackOverflow2013

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plurals

PO
primarykey
Id
20099033
data
AcceptedAnswerId
0
AnswerCount
0
ClosedDate
CommentCount
4
CommunityOwnedDate
CreationDate
2013-11-20T14:47:31.443
FavoriteCount
0
LastActivityDate
2014-11-20T07:54:10.620
LastEditDate
2014-11-20T07:54:10.620
LastEditorUserId
1363156
OwnerUserId
1363156
ParentId
20098597
PostTypeId
2
Score
3
ViewCount
0
LastEditorDisplayName
text
Body
<code>initWithArray:</code> initializes a new array and places in it all the objects contained in a given array. This means that each object in the given array will receive a <code>retain</code>. Hence, if you edit an object in the new array, you will modify that object even in the given array. (see shallow copy) On the other hand, <code>initWithArray:copyItems:</code>, if <code>YES</code> is passed as second argument, will provide a deep copy. Beware that if you need to deeply copy an entire nested data structure then this approach will not suffice. (see the Apple <a href="https://developer.apple.com/library/mac/documentation/Cocoa/Reference/Foundation/Classes/NSArray_Class/NSArray.html#//apple_ref/occ/instm/NSArray/initWithArray:copyItems:" rel="nofollow">documentation</a>) Example: <pre><code>NSMutableString *s = [[NSMutableString alloc] initWithString:@"hello"]; NSArray *a = @[s]; NSArray *b = [[NSArray alloc] initWithArray:a]; [a[0] appendString:@" there"]; </code></pre> after these lines the arrays <code>a</code> and <code>b</code> will contain the mutable string "hello there" <pre><code>NSMutableString *s = [[NSMutableString alloc] initWithString:@"hello"]; NSArray *a = @[s]; NSArray *c = [[NSArray alloc] initWithArray:a copyItems:YES]; [a[0] appendString:@" there"]; </code></pre> while after these lines the array <code>c</code> will contain the mutable string "hello" and the array <code>a</code> will contain the mutable string "hello there"
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Title
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PostAcceptedAnswerId
1. This table or related slice is empty.
PostParentId
1. POinitWithArray vs initWithArray copyItems
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 PostTypePostTypeId
 PTQuestion
PostTypePostTypeId
1. PTAnswer
UserLastEditorUserId
1. USLuca Torella
UserOwnerUserId
1. USLuca Torella
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PostLinksRelatedPostIdPostId
1. This table or related slice is empty.
PostsAcceptedAnswerId
1. This table or related slice is empty.
PostsParentIdCreationDate
1. This table or related slice is empty.
VotesPostIdCreationDate
1. VO
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1. This table or related slice is empty.

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