struct GrayscaleMap { pixels: Vec<u32>, size: (usize, usize), } let width = 1024; let height = 576; let image = GrayscaleMap { pixels: vec![0; width * height], size: (width, height) }; assert_eq!(image.size, (1024, 576)); assert_eq!(image.pixels.len(), 1024 * 576); 这些是故意书写错误的吗？