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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
DELPHI Write remote control program PDF

Use DELPHI to write remote control programs PDF

2024-01-22 0 560
Git version control and workflow Chinese WORD version

This article is a summary of git version control and workflow. If some friends have not used git before and are not very familiar with the basic concepts and commands of git, you can start with the following basic tutorials: Git is a distributed version control system, and Compared with centralized version control systems similar to SVN, although centralized version control systems can enable multiple team members to collaborate on development, sometimes if the central server goes down, no one can submit updates and collaborate on development during the downtime. Even sometimes, if the central server disk fails and there happens to be no backup or the backup is not timely, then there may be losses.

2024-02-27 1 1003
MATLAB language and control system simulation experiment Chinese WORD version

"MATLAB Language and Control System Simulation Experiment" includes four parts: MATLAB language basics, MATLAB language basic experiments, control theory simulation experiments and experimental assignments. Each student is required to complete the experimental assignments independently after completing the prescribed experimental content to consolidate knowledge and enhance application capabilities. Interested friends can come and take a look

2024-01-18 2 2111
Basic knowledge of PLC programming Chinese doc version

Programmable controller, called Programmable Controller in English, or PC for short. However, because PC is easily confused with Personal Computer (Personal Computer), people are still accustomed to using PLC as the abbreviation of programmable controller. It is an electronic system device with a microprocessor as the core for digital operation. It is specially designed for industrial field applications. It uses programmable memory to store and execute logical operations, sequence control, timing/ Operation instructions such as counting and arithmetic operations, and through digital or analog input

2024-02-29 0 958
Android rtsp streaming media playback introduction Chinese WORD version

This document mainly talks about the introduction of android rtsp streaming media playback; the real-time streaming protocol (RTSP) is an application-level protocol that controls the sending of real-time data. RTSP provides an extensible framework that makes it possible to control and on-demand real-time data, such as audio and video. Data sources include live data and data stored in clips. The purpose of this protocol is to control multiple data sending connections, provide a way to select a sending channel, such as UDP, multicast UDP and TCP, and provide a method to select a sending mechanism based on RTP. I hope this document will help friends in need; interested

2024-02-26 0 965
Android driver development examples Chinese WORD version

This document describes how to completely develop a driver on Android 2.1 to control the hardware port and write an application to test the driver. Through such an example, it analyzes the application calling process of the driver development process under Android, which can be said to be a good introductory guide. The effect achieved: Through the Android application, the driver is called to control the on and off of 4 LEDs on the development board. Interested friends can come and take a look

2024-02-28 0 972
Python Tutorial Beginner's Guide PDF version

Python Tutorial - Python Beginner's Guide PDF version, content includes: Whetting Your Appetite Using the Python Interpreter More Control Flow Tools Process Control Data Structures Errors and E

2024-01-26 0 1369
How to use Android Tasker Chinese WORD version 2MB

This document mainly describes how to use Android's Tasker; Tasker on Android is definitely one of the artifacts of the Android system. Unlike Auto Memory Manager, Tasker is not an acceleration software, but a system-enhanced software. Because There are many system states that can be controlled, making Tasker the brightest star in the Android system. But Tasker is undoubtedly the most difficult software to use. Because there are so many places you can control, it makes people feel a little overwhelmed.

2024-01-30 0 668
Android sensor programming Chinese WORD version

This document mainly talks about Android sensor programming; a sensor is a physical device or biological organ that can detect and feel external signals, physical conditions (such as light, heat, humidity) or chemical composition (such as smoke), and will detect Information is passed to other devices or organs. At the same time, it can also be said that the sensor is a detection device that can sense the information being measured, and can transform the detected information into electrical signals or other required forms of information output according to certain rules to meet the needs of information transmission and Requirements for processing, storage, display, recording and control. It is the first to realize automatic detection and automatic control

2024-02-27 0 504
Perl basic tutorial chm

A basic introductory Chinese tutorial on Perl, in chm format, describing an overview of PERL, simple variables, operators, list and array variables, file reading and writing, pattern matching, control structures, subroutines, associative arrays/hash tables, formatted output, and file systems , reference, object-oriented, packages and modules and other knowledge points. Suitable for beginners to read and understand the Perl scripting language.

2024-02-26 0 1716
Git Reference Manual Chinese CHM version

Git is a free, open source distributed version control system for agile and efficient handling of any project, small or large. Git's work requires code that calls curl, zlib, openssl, expat, libiconv and other libraries. Git currently supports Linux/Unix, Solaris, Mac and Windows platforms. This article brings you the Git reference manual, you can download it if you need it!

2024-01-30 0 1231
Python v2.4 Chinese manual chm

The Chinese manual of Python v2.4 version in chm format is rich and comprehensive in content. It is not only a manual, you can use it as an introductory tutorial for Python, teaching you how to use the Python interpreter, process control, data structure, templates, Knowledge and skills in input and output, errors and exceptions, detailed explanations of classes and standard libraries, etc. At the same time, the attached manual can facilitate your inquiries.

2024-01-26 6 1315
Python website development guide WORD version

This document mainly talks about the guidelines for developing websites in Python; HTML is the universal language of the Internet, a simple and universal all-in-one markup language. It allows web page producers to create complex pages that combine text and images. These pages can be browsed by anyone else on the Internet, no matter what type of computer or browser is used. Python, like other programming languages, has its own set of processes. Control statements, and the syntax of these statements is similar to other programming languages. They all have keywords such as for, if, and while to express the program flow. I hope this document will help friends in need

2024-01-25 0 979
Smart home based on Android Chinese WORD version

Android: Android is an open source operating system based on Linux, mainly used in portable devices. Android is an open source operating system designed specifically for mobile phones. Android phones will open up new applications and make home intelligence available to ordinary families. The Android interface display (Cortex_A8) comes from the Cortex_m0 analog quantity and can control or operate Cortex_m0. Friends in need can download and take a look

2024-02-29 0 689
Asset server server construction for Unity3D game development Chinese WORD version

This document mainly talks about the construction of Asset server server for Unity3D game development; Asset Server is currently the resource version management tool that comes with Unity. It is similar to the SVN and perForce we are usually familiar with. However, for the current Unity, Asset Server is more powerful than Unity. Version control software such as SVN and perForce are easier to use, because the Unity3.x version does not support software such as SVN very well. When multiple people work together, data loss and other situations often occur. because

2024-02-27 1 680
Android Game Development Journey Chinese WORD Version

This document mainly talks about the Android game development journey; today Android123 starts a new Android game development journey series, mainly from the control method (buttons, trackball, touch screen, gravity sensor, camera, microphone airflow, light brightness), graphics View (efficient drawing technology such as double buffering), sound effects (game music) and finally OpenGL ES (Java layer) and NDK's OpenGL and J2ME game porting methods to Android. Of course, there are also some game implementation idiomatic methods, such as map editors, In Andr

2024-02-28 0 1115
Getting started with Qt QML

This document mainly talks about getting started with Qt QML – QML syntax; QML is a descriptive scripting language, and the file format ends with .qml. The syntax format is very similar to CSS (refer to the specific examples below), but it also supports programming control in the form of javascript. QML is part of the Qt Quick technology launched by Qt. It is a new and easy-to-learn language. I hope this document will help friends in need; interested friends can come and take a look.

2024-01-28 0 785
QML introductory tutorial Chinese WORD version

This document mainly talks about the introductory tutorial of QML; QML is a descriptive scripting language, and the file format ends with .qml. The syntax format is very similar to CSS (refer to the specific examples below), but it also supports programming control in JavaScript form. It combines the advantages of QtDesigner UI and QtScript. QtDesigner can design .ui interface files, but does not support interaction with Qt's native C++ code. I hope this document will help friends in need; interested friends can come and take a look.

2024-01-31 0 695
Flash Builder Operation Guide Chinese WORD version

This document mainly talks about the Flash Builder operation guide; Flash Builder combines the resources (folders and files) that make up the application into a container, which we call a project. A project contains a set of properties that control how the application is built, where the built application resides, how debugging is handled, and the project's relationship to other projects in the workspace. I hope this document will help friends in need; interested friends can come and take a look.

2024-01-17 0 990