典型常用数：00000000 = 0x0 = 011111111 = 0xFF = 25511110000 = 0xF0 = 24000001111 = 0x0F = 15

项目集成SDWebImage，运行报错：SDWebImageManager,Too many arguments to function call, expected 0, have 5选中项目，进入Build Settings,搜索"ENABLE_STRICT_OBJC_MSGSEND",并将其改为NO。