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- Hive permission control Chinese WORD version
- Hive can control permissions through metadata from version 0.10 (including version 0.10) onwards. In versions before Hive-0.10, permissions are mainly controlled through Linux users and user groups. CREATE, SELECT, and DROP of Hive tables cannot be controlled. Of course, Hive's control of permissions based on metadata is not completely safe. The purpose is to prevent users from accidentally doing operations they shouldn't do. Interested friends can come and take a look
- 2024-02-03 0 1432
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- Android security and permissions WORD version
- This document mainly talks about the security and permissions of Android; Android is a multi-process system, and each application (and system component) runs in its own process. I hope this document will help friends in need; interested friends can come and take a look.
- 2024-01-28 2 1925
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- Python operation Mysql example code tutorial
- This article introduces various code examples and detailed introductions such as Python operating MYSQL, executing SQL statements, obtaining result sets, traversing result sets, obtaining a certain field, obtaining table field names, inserting pictures into the database, executing transactions, etc. Most of the code is A sumptuous and beautiful code feast. If you want to view the online version, please visit: https://www.jb51.net/article/34102.htm
- 2024-01-26 0 1364
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- Introduction to shell programming under Linux system Chinese WORD version
- This document mainly talks about the introduction to shell programming under Linux system; Shell programming has many features similar to C language and other programming languages, but it is not as complicated as programming languages. A shell program is a series of Linux commands and utilities placed in a file. When executed, each command is interpreted and executed one by one by Linux. Interested friends can come and take a look
- 2024-01-27 9 1888
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- OpenMP parallel programming WORD version
- This document mainly talks about OpenMP parallel programming; OpenMP is a collection of compiler instructions and library functions, mainly used for parallel programming on shared storage computers. Currently, the languages that support OpenMP mainly include Fortran and C/C++. OpenMP uses the fork/join parallel mode when executing programs in parallel. Shared storage parallel programs use fork/join parallelism. I hope this document will help friends in need; interested friends can come and take a look.
- 2024-02-29 0 1093
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- The use of multi-threading technology in iOS development WORD version
- This document mainly talks about the use of multi-threading technology in iOS development; the so-called process corresponds to an application, which is responsible for opening up memory space for application use, but the process cannot execute tasks (instructions). A process contains at least one thread, which is the execution flow of the program. When an iOS program starts, while creating a process, it will start running a thread, which is called the main thread; I hope this document will help friends in need; interested friends can come and take a look.
- 2024-02-28 0 1125
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- Shell scripting basics Chinese WORD version
- Shell itself is a program written in C language, which is a bridge for users to use Linux. Shell is both a command language and a programming language. As a command language, it interactively interprets and executes commands entered by the user; as a programming language, it defines various variables and parameters, and provides many control structures found only in high-level languages, including loops and branches. Although it is not part of the Linux system core, it calls most of the functions of the system core to execute programs, create files, and coordinate the running of various programs in a parallel manner. Therefore, for
- 2024-02-03 6 2665
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- Maven series
- Some companies do not provide external networks for programmers, so maven cannot be used to access remote warehouse addresses, so it is necessary to find a machine in the LAN that has external network permissions; build a nexus private server, and then programmers connect to this private server In this case, you can access the maven remote warehouse through this computer with a nexus private server. Interested friends can come and take a look
- 2024-02-29 6 1571
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- Tutorial on using SQLite database in Android development chm version
- Tutorial on Android development using SQLite database, chm format. SQLite is a very popular embedded database that supports SQL queries and uses only a small amount of memory. Android integrates SQLite at runtime, so every Android application can use a SQLite database. For developers familiar with SQL, using SQLite is fairly simple. Yes, since JDBC is not suitable for memory-constrained devices such as mobile phones, Android
- 2024-02-28 0 1067
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- Python introductory tutorial Chinese WORD version
- Python is an efficient language. The reading and writing operations are very simple. Just like ordinary English, Python is an interpreted and executed language. We do not need to compile, we only need to write the code to run. Python is an oriented language. The language of objects, everything in Python is an object. Python is a very interesting language; interested friends can come and take a look.
- 2024-01-25 0 656
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- Analysis of Android application message processing mechanism Chinese WORD version
- Android applications are driven by messages. The system maintains a message queue for each application. The main thread of the application continuously obtains messages from this message queue (Looper), and then processes these messages (Handler). , In this way, the execution of the application is driven by messages. This article will analyze the message processing mechanism of Android applications in detail. Friends in need can download and take a look
- 2024-02-28 0 1091
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- Android seamlessly replaces Dalvik virtual machine Chinese WORD version
- This document mainly talks about the seamless replacement of the Dalvik virtual machine by Android; the Dalvik virtual machine is actually a Java virtual machine, but it does not execute class files, but dex files. Therefore, the most ideal way for the ART runtime is to implement it as a Java virtual machine, so that the Dalvik virtual machine can be easily replaced. I hope this document will help friends in need; interested friends can come and take a look.
- 2024-02-01 0 493
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- Android_Intent detailed explanation WORD version
- This document mainly talks about the detailed explanation of Android_Intent; Intent is an abstract description of the action to be performed. Generally speaking, it is used as a parameter. Intent assists in completing the communication between various components of Android. For example, call startActivity() to start an activity, or broadcastIntent() to pass it to all interested BroadcaseReceivers, or startService()/bindse
- 2024-01-29 2 2470
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- Groovy Getting Started Tutorial Chinese WORD Version
- This document is an introductory tutorial to Groovy; simply put, Groovy is the next generation of Java language. Like Java, it also runs in the JVM. As another language running in the JVM, groovy syntax is very similar to the Java language syntax. At the same time, Groovy abandons Java's cumbersome grammar. For the same statement, using groovy can reduce your keystrokes to the greatest extent - this is indeed the "lazy programmers"
- 2024-02-26 1 605
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- eoeAndroid special issue second issue Android image processing pdf version
- The second issue of eoeAndroid special issue: Android image processing pdf, the second topic planned by eoeAndroid, mainly organizes and translates some resources and articles on image processing in Android. By studying the content of this topic, you can master how to perform image processing on Android. Programming for images mainly includes but is not limited to the following content: • Introduction to image formats supported in Android; • Introduction to image libraries in Android&b
- 2024-01-31 0 639
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- Pascal basic tutorial Pascal essential basic tutorial for getting started CHM version
- No matter what you do, there must be certain methods and steps. Computer programming is more rigorous, standardized, and feasible than transaction processing in daily life. In order for the computer to effectively solve certain problems, the processing steps must be arranged and a "sequence" composed of computer language is used to allow the computer to automatically recognize and execute this "sequence" composed of computer language to complete the predetermined task. Arrange the steps to deal with the problem and use computer language to form a sequence, which is often called
- 2024-01-19 2 575
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- MATLAB function help document Chinese WORD version
- A function is a set of statements that work together to perform a task. In MATLAB, functions are defined in separate files. The file names of the file functions should be the same. Functions operate in their own workspace, which is also called the local workspace, independent of the workspace, accessed at the MATLAB command prompt, which is called the base workspace variable. Functions can accept multiple input parameters and may return multiple output parameters. MATLAB is a programming language developed by The MathWorks Company. It was originally a matrix programming language that made linear algebra programming easy. It can be run on
- 2024-01-18 1 632
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- Delphi2006 tutorial DbExpress efficient database development chm version
- When the author decided to update this book, it was hard to believe that nearly 4 years had passed from Delphi 7 to Delphi 2006. During this time, Borland's database access technology has also undergone considerable changes. First let's introduce the subject of this book: dbExpress. dbExpress has developed from version 2.0 of Delphi 7 to version 3.0 of Delphi 2006. In addition to updating support for the latest versions of various databases, the more important progress lies in the continuous improvement of execution efficiency and the improvement of Win32
- 2024-01-19 0 723
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- API Hook Complete Manual Chinese WORD Version
- This document mainly talks about the complete manual of API Hook; API HOOK technology is a technology used to change API execution results. Microsoft itself also uses this technology in the Windows operating system, such as Windows compatibility mode, etc. API HOOK technology is not a proprietary technology for computer viruses, but computer viruses often use this technology to hide themselves. I hope this document will help friends in need; interested friends can come and take a look.
- 2024-01-29 0 641
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- Delphi Language Reference Chinese WORD version
- This document mainly talks about the Delphi language reference; Delphi is a structured, object-oriented, type-robust, high-level language that can be compiled and executed. Its object pascal syntax specification has good readability, fast compilation, and multi-unit modular programs. Design and other advantages. Delphi technology Borland's component framework and rapid development environment. For the most part, this syntax guide assumes you are using Borland's development tools. I hope this document will help friends in need; interested friends can come and take a look.
- 2024-01-18 0 520