StackOverflow2013

Note that there are some explanatory texts on larger screens.

plurals

PO
text
Body
copied!<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 <Foundation/Foundation.h> @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 < rows; i++) { NSMutableArray *column = [NSMutableArray arrayWithCapacity:columns]; for (int j = 0; j < 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>

Querying!

Guidance

An individual column

Larger individual text columns get their own page to allow for proper reading.

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