uuid

问题 Is there any way to generate a unique random number that has 8 bytes size in python language? I used the UUID library but it has 16 bytes which are not aligned with my requirement. Any help would be much appreciated. Thanks in advance 回答1: Well, you could use Linear Congruential Generator which, with proper selection of parameters, produce perfect mapping from u64 to u64. In other words, if you have access to previous 8bytes UUID, you could generate reasonable random next 8bytes UUID WITHOUT

问题 Is there any way to generate a unique random number that has 8 bytes size in python language? I used the UUID library but it has 16 bytes which are not aligned with my requirement. Any help would be much appreciated. Thanks in advance 回答1: Well, you could use Linear Congruential Generator which, with proper selection of parameters, produce perfect mapping from u64 to u64. In other words, if you have access to previous 8bytes UUID, you could generate reasonable random next 8bytes UUID WITHOUT

问题 Using gulp 3.9.1 I am attempting to return a bunch of files and perform a task that requires a var to be passed between two pipes. I'm using node uuid to create a v3 UUID for each file path to ultimately end up with a uuid for each page. I'm grabbing the file path with gulp-print. I want to store that uuid value as a var. In the next pipe Im using gulp-inject-string to write it into the page during the build. Help: Either I need help getting the file path inside the gulp-inject-string pipe or

问题 How do i apply uuid and date so that the filename stored in my database and the filename stored in my S3 bucket are the same? With this current implementation, the uuid and the date are always the same even if a post was made hours later. Can someone help, would really appreciate it. const s3 = new AWS.S3({ accessKeyId: process.env.AWS_ID, secretAccessKey: process.env.AWS_SECRET, region:process.env.AWS_REGION }) const uid =uuidv4(); const date =new Date().toISOString() const multerS3Config =

问题 i am trying to rename my file originalname when using multer memoryStorage. I am using multer to upload an array of files and when i console.log(req.files) i get: { fieldname: 'images', originalname: 'snake.jpg', encoding: '7bit', mimetype: 'image/jpeg', buffer: <Buffer ff d8 38134 more bytes>, size: 38184 } The reason i want to rename my originalname is i am storing the images in AWS S3 and if the images have the same name it gets updated not added as a new image. I have tried doing so by

问题 i am trying to rename my file originalname when using multer memoryStorage. I am using multer to upload an array of files and when i console.log(req.files) i get: { fieldname: 'images', originalname: 'snake.jpg', encoding: '7bit', mimetype: 'image/jpeg', buffer: <Buffer ff d8 38134 more bytes>, size: 38184 } The reason i want to rename my originalname is i am storing the images in AWS S3 and if the images have the same name it gets updated not added as a new image. I have tried doing so by

问题 i am trying to rename my file originalname when using multer memoryStorage. I am using multer to upload an array of files and when i console.log(req.files) i get: { fieldname: 'images', originalname: 'snake.jpg', encoding: '7bit', mimetype: 'image/jpeg', buffer: <Buffer ff d8 38134 more bytes>, size: 38184 } The reason i want to rename my originalname is i am storing the images in AWS S3 and if the images have the same name it gets updated not added as a new image. I have tried doing so by

问题 When I use below to get the user object it works just fine. @GetMapping("/findOne") @ResponseBody public Optional<AppUser> findOne (Long id) { return appUserRepository.findById(id); } Above gives me a response back as: {"id":1,"useruuid":"863db606-9af6-48a8-963a-07b9fe0fc4fc","useremail":"user1@mydomain.com"} Now, I am trying to search based on UUID(4) using this: @GetMapping("/findOneUsingUUID") @ResponseBody public AppUser findOne (String useruuid) { return appUserRepository.findByUseruuid

问题 When I use below to get the user object it works just fine. @GetMapping("/findOne") @ResponseBody public Optional<AppUser> findOne (Long id) { return appUserRepository.findById(id); } Above gives me a response back as: {"id":1,"useruuid":"863db606-9af6-48a8-963a-07b9fe0fc4fc","useremail":"user1@mydomain.com"} Now, I am trying to search based on UUID(4) using this: @GetMapping("/findOneUsingUUID") @ResponseBody public AppUser findOne (String useruuid) { return appUserRepository.findByUseruuid

问题 When I use below to get the user object it works just fine. @GetMapping("/findOne") @ResponseBody public Optional<AppUser> findOne (Long id) { return appUserRepository.findById(id); } Above gives me a response back as: {"id":1,"useruuid":"863db606-9af6-48a8-963a-07b9fe0fc4fc","useremail":"user1@mydomain.com"} Now, I am trying to search based on UUID(4) using this: @GetMapping("/findOneUsingUUID") @ResponseBody public AppUser findOne (String useruuid) { return appUserRepository.findByUseruuid