Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>I would do it as follows:</p> <pre><code>self.playerItems = [[NSMutableArray alloc] initWithCapacity:11]; NSMutableArray * itemArray; Item * anItem; for (int playerIndex = 1; playerIndex &lt;= 10; playerIndex++) { itemArray = [NSMutableArray arrayWithCapacity:60]; [playerItems addObject:itemArray]; for (int itemIndex = 1; itemIndex &lt;= 50; itemIndex++) { anItem = [[Item alloc] init]; anItem.kind = 1; [itemArray addObject:anItem]; [anItem release]; } } </code></pre> <p>As a side note, you should definitely read up on <a href="http://developer.apple.com/documentation/Cocoa/Conceptual/MemoryMgmt/MemoryMgmt.html" rel="noreferrer">memory management in Cocoa</a>, since your original code is full of memory leaks. It can be a bit difficult to wrap your head around at first, but once you learn it, it becomes second nature. Well worth the effort.</p> <p><strong>update:</strong></p> <p>A more object-oriented way to do this would be to create a <code>Player</code> class, and have each <code>Player</code> manage its own set of items:</p> <p><strong>Player.h</strong> </p> <pre><code>@interface Player : NSObject { NSMutableArray * items; } @property (readonly) NSMutableArray * items; @end </code></pre> <p><strong>Player.m</strong> </p> <pre><code>#import "Player.h" @implementation Player @synthesize items; - (id)init { if ((self = [super init]) == nil) { return nil; } items = [[NSMutableArray alloc] initWithCapacity:60]; Item * anItem; for (int itemIndex = 1; itemIndex &lt;= 50; itemIndex++) { anItem = [[Item alloc] init]; anItem.kind = 1; [items addObject:anItem]; [anItem release]; } return self; } - (void)dealloc { [items release]; [super dealloc]; } @end </code></pre> <p><strong>Elsewhere</strong> </p> <pre><code>NSMutableArray * allPlayers = [[NSMutableArray alloc] initWithCapacity:11]; Player * aPlayer; for (int playerIndex = 1; playerIndex &lt;= 10; playerIndex++) { aPlayer = [[Player alloc] init]; [allPlayers addObject:aPlayer]; [aPlayer release]; } ... [allPlayers release]; </code></pre>
    singulars
    1. This table or related slice is empty.
    1. PONested arrays in Objective-C ( NSMutableArray )
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USe.James
    1. USe.James
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PONested arrays in Objective-C ( NSMutableArray )
      singulars
      1. PTQuestion
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. COThe first way worked, going to use that! Thanks for the example of Player objects.. for complicated projects (this one's pretty simple) object-oriented seems to be the way to go.
      singulars
      1. PO
      1. USuser128526
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload