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    <p>Reviving an old thread, but I reworked Jack's code so 1. it compiles and 2. it is in the order of 2D c arrays [rows][columns] instead of [sections(columns)][rows] as he has it. Here you go!</p> <p>TwoDArray.h:</p> <pre><code>#import &lt;Foundation/Foundation.h&gt; @interface TwoDArray : NSObject @property NSMutableArray *rows; - initWithRows:(NSUInteger)rows columns:(NSUInteger)columns; + sectionArrayWithRows:(NSUInteger)rows columns:(NSUInteger)columns; - objectInRow:(NSUInteger)row column:(NSUInteger)column; - (void)setObject:(id)obj inRow:(NSUInteger)row column:(NSUInteger)column; @end </code></pre> <p>TwoDArray.m:</p> <pre><code>#import "TwoDArray.h" @implementation TwoDArray - (id)initWithRows:(NSUInteger)rows columns:(NSUInteger)columns { if ((self = [self init])) { self.rows = [[NSMutableArray alloc] initWithCapacity: rows]; for (int i = 0; i &lt; rows; i++) { NSMutableArray *column = [NSMutableArray arrayWithCapacity:columns]; for (int j = 0; j &lt; columns; j++) { [column setObject:[NSNull null] atIndexedSubscript:j]; } [self.rows addObject:column]; } } return self; } + (id)sectionArrayWithRows:(NSUInteger)rows columns:(NSUInteger)columns { return [[self alloc] initWithRows:rows columns:columns]; } - (id)objectInRow:(NSUInteger)row column:(NSUInteger)column { return [[self.rows objectAtIndex:row] objectAtIndex:column]; } - (void)setObject:(id)obj inRow:(NSUInteger)row column:(NSUInteger)column { [[self.rows objectAtIndex:row] replaceObjectAtIndex:column withObject:obj]; } @end </code></pre>
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    1. PO2D arrays using NSMutableArray
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    1. COIf you're going to revive this old thread, at least use modern things like the literal array syntax, some good links here: http://stackoverflow.com/a/13482653/700471 I think you can even do something like `myArray[0][3]`, although I could be wrong.
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    2. CO@MattMc: Thanks for the link! I'm fairly inexperienced in this, just thought I'd share what worked for me. Will definitely check that out though.
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    3. COSure thing :) I took my own suggestion and threw together a method that incorporates the literal syntax and so on, so you can get an idea; it's below.
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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.

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