NSArray

配列

生成

NSArray *array = [NSArray arrayWithObjects:@"abc", @"def", @"ghi", nil ];
NSArray *array = [[NSArray alloc] initWithObjects:@"abc", @"def", @"ghi", nil ];

要素数

int arrCount = [array count];

取り出し

id obj = [array objectAtIndex:2];
id obj = [array lastObject];
NSArray *array1 = [array2 subarrayWithRange:NSMakeRange(1, 3)];

インデックス取得

int objectIndex = [array indexOfObject:@"abc"];
if (objectIndex == NSNotFound) {
    NSLog(@"'abc' is not found.\n");
}

包含確認

BOOL isObjectContain = [array containsObject:@"xyz"];

比較

NSArray *array1 = [NSArray arrayWithObjects:@"abc", @"def", @"ghi", nil ];
BOOL isArrayEquals = [array2 isEqualToArray:array1];

出力

NSLog(@"array : %@\n", array);
NSLog(@"arrCount : %d\n", arrCount);
NSLog(@"obj01 : %@\n", obj01);
NSLog(@"obj02 : %@\n", obj02);
NSLog(@"array2 : %@\n", array2);
NSLog(@"objectIndex : %d\n", objectIndex);
NSLog(@"isObjectContain : %d\n", isObjectContain);
NSLog(@"isArrayEquals : %d\n", isArrayEquals);