Programmer Group

catalogue 1, Bitmap         1.1 bitmap concept         1.2 application of bitmap         1.3 implementation of bitmap                  2, Bloom filter         2.1 concept of Bloom filter       &n ...

Validation -- a feature rich PHP parameter validator Validation is used to check the validity of background parameters. Easy to use and intuitive. https://github.com/gitHusband/Validation If you have any opinions or ideas, we can communicate and discuss together! As for why I wrote this tool: For background parameters, in theory, t ...

As a technician, many videos stored on the computer hard disk are tutorials and videos, not movies. These long-term video files will be of great help to us if they can be compressed effectively. I usually use the pill toolbox for compression. This is currently recognized as the best compression software. Baidu online disk link: https://pan.bai ...

order The best way to represent data depends not only on the semantics of the data, but also on the type of model used. linear model With tree based models (e.g Decision tree，Gradient lifting tree and Random forest )It is a very common model with many members. They have very different properties when dealing with different feature representat ...

wait/notify wait notification method The wait notification mechanism is that the thread in the waiting state will be notified by other threads to obtain CPU resources again and continue to perform tasks that have not been completed before. The most typical example is the producer consumer model If the producer wants to add products to the q ...

MongoDB is the most popular NoSQL database, and SpringBoot is a best practice for using Spring. Today, let's talk about the two ways SpringBoot integrates MongoDB. The installation of MongoDB can be queried on the official website. The most convenient way for local development is to use Docker. 1, Preparatory work 1. Engineering generation ...

Source location: intset.h and intset.c 8.1 data structure /* Note that these encodings are ordered, so: * INTSET_ENC_INT16 < INTSET_ENC_INT32 < INTSET_ENC_INT64. */ #define INTSET_ENC_INT16 (sizeof(int16_t)) #define INTSET_ENC_INT32 (sizeof(int32_t)) #define INTSET_ENC_INT64 (sizeof(int64_t)) // All the following data are stored in ...

Catalog Spring Configuration Data Source Role of data sources (connection pools) Steps for developing data sources   Manual creation of data sources   Spring Configuration Data Source   Extract jdbc configuration file Spring Annotation Development Spring original annotations New Spring Notes   Spring Integrated Jun ...

GB/T28181 The full name of the national standard GB/T28181 protocol, technical requirements for information transmission, exchange and control of security video surveillance networking system, is a white paper defining the standards for video networking transmission and equipment control. It is proposed by the science and Technology Informatio ...

Some nagging As long as all apps on the market have search function, they are almost inseparable from streaming layout, such as Taobao, JD, xiaohongshu and so on. During the summer vacation, I wrote an app similar to Taobao, which uses this streaming layout. This is the actual effect of your app Here are the test results Inherit ViewG ...