James (MrGeckosMedia.com), joined by, Eduardo (MegaEduX.com), and John (@ZimiPoder), shows how Dictionaries, Arrays and Property Lists works in Cocoa.

12:40

Example code from episode.
#import <Foundation/Foundation.h>

int main (int argc, const char * argv[]) {NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];NSLog(@"Array");NSArray *array = [NSArray arrayWithObjects:@"Orange", @"Apple", @"Banana", nil];for (int i=0; i<[array count]; i++) {NSLog(@"%@", [array objectAtIndex:i]);}NSLog(@"Sorting Array");array = [array sortedArrayUsingSelector:@selector(compare:)];for (int i=0; i<[array count]; i++) {NSLog(@"%@", [array objectAtIndex:i]);}NSLog(@"Saving Property List");[array writeToFile:[@"~/Desktop/array.plist" stringByExpandingTildeInPath] atomically:YES];NSLog(@"Mutable Array");NSMutableArray *mutableArray = [NSMutableArray array];[mutableArray addObject:@"Apples"];[mutableArray addObject:@"Oranges"];[mutableArray addObject:@"Bananas"];for (int i=0; i<[mutableArray count]; i++) {NSLog(@"%@", [mutableArray objectAtIndex:i]);}NSLog(@"Removing object Oranges");[mutableArray removeObjectAtIndex:1];for (int i=0; i<[mutableArray count]; i++) {NSLog(@"%@", [mutableArray objectAtIndex:i]);}NSLog(@"Dictionary");NSDictionary *dictionary = [NSDictionary dictionaryWithObjectsAndKeys:@"Oranges", @"Name", @"Fruit", @"Type", [NSNumber numberWithBool:YES], @"Seeds", nil];NSLog(@"Adding %@ with name %@", [dictionary objectForKey:@"Type"], [dictionary objectForKey:@"Name"]);[mutableArray insertObject:dictionary atIndex:1];for (int i=0; i<[mutableArray count]; i++) {NSLog(@"%@", [mutableArray objectAtIndex:i]);}NSLog(@"Saving Property List using NSPropertyListSerialization");NSData *xmlData = [NSPropertyListSerialization dataFromPropertyList:mutableArray format:NSPropertyListXMLFormat_v1_0 errorDescription:nil];[xmlData writeToFile:[@"~/Desktop/mutableArray.plist" stringByExpandingTildeInPath] atomically:YES];NSLog(@"Mutable Dictionary");NSMutableDictionary *mutableDictionary = [NSMutableDictionary dictionary];[mutableDictionary setObject:@"Salad" forKey:@"Name"];[mutableDictionary setObject:@"Veggie" forKey:@"Type"];[mutableDictionary setObject:[NSDate date] forKey:@"Time"];[mutableDictionary setObject:[NSNumber numberWithBool:NO] forKey:@"Seeds"];NSLog(@"Adding %@ with name %@", [mutableDictionary objectForKey:@"Type"], [mutableDictionary objectForKey:@"Name"]);[mutableArray insertObject:mutableDictionary atIndex:0];for (int i=0; i<[mutableArray count]; i++) {NSLog(@"%@", [mutableArray objectAtIndex:i]);}NSLog(@"Saving Binary Property List");NSData *binaryData = [NSPropertyListSerialization dataFromPropertyList:mutableArray format:NSPropertyListBinaryFormat_v1_0 errorDescription:nil];[binaryData writeToFile:[@"~/Desktop/bina ry.plist" stringByExpandingTildeInPath] atomically:YES];[pool drain];return 0;}
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