Tag:information

  • Fundamentals of computer operating system (2) — process entity of process management

    Time:2020-7-6

    introduction This paper is the second part,Process entity of process managementLet’s familiarize ourselves with why processes are used and what process entities are 1、 Why processes are needed From the last article, we know that the basic function of the operating system is to manage the underlying hardware resources, including the following parts Yesoperating systemThese […]

  • Segmentation fault node error

    Time:2020-7-6

    Error information (dv) [email protected]:~# node -v Segmentation fault (dv) [email protected]:~# npm -v Segmentation fault Using N management, when the node version is rolled back from 9.2.0 to 8.7.0, the binary file download may be completed, and then the node command and NPM command will returnSegmentation fault After checking the stack overflow, I tried to unload […]

  • [Mr. Zhao Qiang] the process of establishing the connection between Oracle PGA and database

    Time:2020-7-6

    First, let’s take a look at the memory structure of Oracle, as follows:   For details about the memory structure of Oracle, please refer to the memory structure of Oracle database (1) Composition and structure of PGA PGA is mainly composed of the following three parts: Private SQL area: the private SQL area contains data […]

  • 00014 layui open multi tab tabs pop up layer

    Time:2020-7-3

    showRec:function () { var checkStatus = table.checkStatus(‘egressionListTable’) var recs = checkStatus.data; if(!recs || recs.length!=1){ layer.msg (‘please select a record’); return; } var rec = recs[0]; window.formData = rec; var dialog = layer.tab({ tab: [ { Title: ‘out of office information’, content: ‘<iframe style=”width:100%;height:100%;” frameborder=”0″ scrolling=”auto” name=”iframe0″></iframe>’ },{ Title: ‘audit information’, content: ‘<iframe style=”width:100%;height:97%;” frameborder=”0″ scrolling=”auto” […]

  • Python to get the original GPS location information, easy to get your activity track

    Time:2020-7-2

    1、 Image EXIF information introduce EXIF (exchangeable image file format) is specially set for the photos of digital cameras. It can record the attribute information and shooting data of digital photos, such as shooting time, image resolution, sensitivity value, GPS coordinates, etc. EXIF was originally formulated by Japan Electronics Industry Development Association in 1996, version […]

  • Meet JWT

    Time:2020-7-2

    1. What is JSON web token JSON web token (JWT) is an open standard (RFC 7519), which defines a compact, self-contained way to securely transfer information between parties as JSON objects. This information can be verified and trusted because it is digitally signed. 2. When should you use JSON web tokens It is useful to […]

  • 7. Android – stress testing, unit testing, log cat use

    Time:2020-7-1

    1. Stress test monkey Enter the following command through CMD: adb shell monkey -p com.example.phonecall –ignore-crashes –ignore-timeouts –monitor-native-crashes -v -v -v 10000 > F:\monkey_log\test1.txt   Represents a test com.example.phonecall Application program, randomly send click / slide / switch events 10000 times, (- V – V – V) indicates that the information log is the highest […]

  • Using dapper to easily access SQL Server database (core source code)

    Time:2020-6-30

    hello everyone,I’m Rector, a. Neter focused on building the. Net developer community. I have previously launched a series of video lectures on C ා video tutorial: easy access to SQL Server database with dapper. This lecture is mainly aimed at C ා beginners or partners who are willing to learn about dapper What is dapper […]

  • Learn about JWT in login

    Time:2020-6-29

    1. What is JSON web token JSON web token (JWT) is an open standard (RFC 7519), which defines a compact, self-contained way to securely transfer information between parties as JSON objects. This information can be verified and trusted because it is digitally signed. 2. What is the use of JSON web token It is useful […]

  • Summary of unit 4 of OO

    Time:2020-6-29

    1、 Architecture design of two assignments in this unit 1. First assignment Overall idea: with class as the core, four classes, MyInterface, MyAttribute, MyOperation and MyAssociation, are established to store the interface, attribute, method and association information of each class, and provide corresponding methods to obtain basic information. Architecture design: in myumllinteraction, establish multiple hashmaps […]

  • Scenario analysis on the application of blockchain technology in copyright field

    Time:2020-6-27

    The scenario of blockchain technology applied to copyright can be divided into the following aspects: physical copyright, digital product copyright and non-standard copyright. Among them, the copyright of physical products is mainly operated offline, and the information needs to go through the chain process. If the certificate is issued to the original producer, the certificate […]

  • What are simple and complex requests

    Time:2020-6-24

    >Several questions: 1. What is cross domain? 2. Why is there a cross domain? 3. How to deal with cross domain In our daily development, we often encounter cross domain resource sharing or cross domain interface access. Cross domain resource sharing (CORS) mechanism allows web application servers to control cross domain access. The cross domain […]