ADO interface _RecordsetPtr pointer

Original reference: ADO interface_RecordsetPtr-CSDN blog _RecordsetPtr smart pointer, which is a pointer specially set up for operating the database through the recordset. Through this interface, various operations can be performed on the records, fields, etc. in the database table. To be clear: the database and the ADO record set are two different concepts, two storage […]

Lenovo Xiaoxin Pro16 installs Ubuntu 20.04 dual system with detailed graphic records

Installation preparation 1. Download operating system image Just go to the Ubuntu official website and download the Ubuntu 20.04 desktop version. It is recommended to install the 20.04.6 version. You can also click here to download. 2. Create a USB boot disk First download rufus from the official website. Insert the USB flash drive, run […]

The SDK comes with test framework usage records (ADB&ADB SHELL, Monkey test, log capture, Automator tests, etc.)

Android SDK analysis Refer to this blog Android SDK analysis_android sdk res-CSDN blog ADB: Android Debug Bridge Understanding: As the name suggests, it serves as a “bridge” to connect computers and Android devices (or virtual machines), allowing users to directly transmit instructions/receive data to the device (virtual machine) through the computer without operating on the […]

MySQL database (database introduction | classification | basic usage | basic SQL statements for libraries, tables, and records)

Article directory MySQL database 1. History of evolution of data access 2. Development History of Data Storage 3. The nature of database 4. Classification of databases 5. Basic use 6. Production of system services 7. Introduction to SQL and nosql 8. Introduction to MySQL database 1. What is a database? 2.The role of database 10. […]

Use Filter AND Interceptor to verify the records (the only one in the entire network, don’t miss this opportunity)

Description: Verification based on spring boot 1. Be familiar with how to use jwt token. (If you don’t know, read here: Let you experience the charm of JWTl token!!!-CSDN Blog) Shared files for Filter and Interceptor: (can be imitated, based on your actual situation) Controller layer code: /* * Copyright (c) 2020, 2023, All rights […]

Spring Data Envers supports the saving and querying of conditional change records

Data auditing is a basic capability of the business system. It requires the system to save all the change records of key data and support the query of the change records. Saving and querying data change records can be easily achieved through spring-data-envers. In some cases, we need to save only the data change records […]

Generate tfrecords format data and use the dataset API to use tfrecords data

TFRecords is a built-in file format designed in TensorFlow. It is a binary file with the following advantages: A framework for unifying different input files It is better memory utilization and easier to copy and move (TFRecord compressed binary files, protocal buffer serialization) is used to store binary data and label (trained category labels) data […]

ORACLE some export and import problem records and detailed solution process

Knowledge Supplement exp and expdp are two tools used to export data in Oracle database, they mainly have the following differences: exp: exp is a traditional export tool, also known as Classic Export. It was introduced in earlier versions of Oracle Database and has some limitations in compatibility and functionality. exp can export an entire […]

Topic of “Code Random Records”: Traversal of Binary Tree

0. Summary of traversal methods of binary tree There are two main ways to traverse a binary tree Depth-first traversal: Go deep first, and then go back when you encounter a leaf node. Breadth-first traversal: Traverse layer by layer. Further expansion from depth-first traversal and breadth-first traversal, the following traversal methods are available Depth-first traversal […]