zen4ever

AVCaptureVideoDataOutput *videoOutput = [[AVCaptureVideoDataOutput alloc] init];

NSDictionary *formats = [NSDictionary dictionaryWithObjectsAndKeys:
       @"kCVPixelFormatType_1Monochrome", [NSNumber numberWithInt:kCVPixelFormatType_1Monochrome],
       @"kCVPixelFormatType_2Indexed", [NSNumber numberWithInt:kCVPixelFormatType_2Indexed],
       @"kCVPixelFormatType_4Indexed", [NSNumber numberWithInt:kCVPixelFormatType_4Indexed],
       @"kCVPixelFormatType_8Indexed", [NSNumber numberWithInt:kCVPixelFormatType_8Indexed],
       @"kCVPixelFormatType_1IndexedGray_WhiteIsZero", [NSNumber numberWithInt:kCVPixelFormatType_1IndexedGray_WhiteIsZero],
       @"kCVPixelFormatType_2IndexedGray_WhiteIsZero", [NSNumber numberWithInt:kCVPixelFormatType_2IndexedGray_WhiteIsZero],
       @"kCVPixelFormatType_4IndexedGray_WhiteIsZero", [NSNumber numberWithInt:kCVPixelFormatType_4IndexedGray_WhiteIsZero],

JadenGeller

// Numerical matrix examples

let x: Matrix = [[10, 9, 8], [3, 2, 1]]
let y: Matrix = [[1, 2, 3], [4, 5, 6]]
let z: Matrix = [[1, 2], [3, 4], [5, 6]]

x + y              // [[11, 11, 11], [7, 7, 7]]
x * y              // [[10, 18, 24], [12, 10, 6]]
2 * x              // [[20, 18, 16], [6, 4, 2]]
y ** z             // [[22, 28], [49, 64]]