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- Running scala program based on spark Chinese WORD version
- This document mainly talks about running scala programs (sbt and command line methods) based on spark; I hope this document will help friends in need; interested friends can come and take a look
- 2024-02-27 0 974
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- 17 common Python runtime errors for newbies Chinese WORD version
- This document mainly talks about 17 common Python runtime errors for novices; when you first learn Python, it may be a bit complicated to understand the meaning of Python error messages. Here are some common runtime errors that can cause your program to crash. Interested friends can come and take a look
- 2024-01-23 0 812
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- Proverbs of Programmers chm version
- This book is a summary of the author's technology and experience in more than ten years of programming career. The content covers everything from understanding the operating mechanism of CPU, Windows, and programming language to code specifications and styles, analysis methods, debugging methods and kernel optimization. It contains the author's cognitive process and thorough analysis of many issues, as well as excellent and a wonderful programming experience.
- 2024-01-19 0 1204
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- AutoIt3 Chinese help document packaging
- AutoIt v3 version, which is a free software that uses a BASIC-like scripting language, is designed for automating operations in a Windows GUI (Graphical User Interface). It utilizes simulated keyboard keys, mouse movements, and window/control combinations to implement automated tasks. This is impossible to achieve in other languages or has no reliable method (such as VBScript and SendKeys). AutoIt is very small and runs completely on all windows operating systems. (thesnow note: It is no longer available.
- 2024-01-19 21 699
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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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- Python functions files and modules Chinese WORD version
- This document mainly talks about Python functions, files and modules. This article constructs a complete Python program. Introduces Python functions and modules, and shows how to build a Python program, store it in a file, and run the program through the command line; I hope this document will help friends in need; interested friends can come here have a look
- 2024-01-23 0 1136
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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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- iOS development learning iOS multi-threading and RunLoop Chinese WORD version
- iOS multi-threaded programming is always difficult for iOS development beginners to understand and master. Now I will use several examples to gain a more systematic and comprehensive understanding of iOS multi-threaded programming. I hope it will be helpful to everyone. Some programs are a straight line from the starting point to the end; some programs are a circle that keeps looping until it is cut off. A straight line is like a simple Hello World. After running and printing, its life cycle is over, like a flash in the pan; a round one is like an operating system, which keeps running until you shut down. A running program is a process or a task, a process
- 2024-02-03 0 1789
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- Getting Started with Android Fragment Usage WORD Version
- This document mainly talks about the usage of Fragments for getting started with Android; Fragments are used to describe some behaviors or part of the user interface in an Activity. We can create multiple UI panels in a single activity by merging multiple fragments, and they can also be reused at the same time. fragment in multiple activities. You can think of fragment as a module of activity. Fragment has its own life cycle and receives its own input events. It can be received from a running
- 2024-02-01 0 580
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- Android adb application and operation commands Chinese WORD version
- Android Debug Bridge (adb) is a multi-purpose tool that helps you manage the state of your device or emulator. You can add adb through the following methods: • Run shell commands on the device • Manage the emulator or device through port forwarding • Copy or copy files from the emulator or device
- 2024-02-26 0 826
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- Using Python for socket programming Chinese WORD version
- This document mainly talks about using Python for socket programming; as an interpreted language, Python is easy to use and can quickly verify our ideas and develop prototype software. A Python program can be interpreted as a whole or line by line. Friends in need can download and take a look
- 2024-01-23 0 1006
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- Easy language introductory tutorial CHM version
- The Easy Language introductory tutorial CHM introduces the basic data types, constant tables, operators, bit operation commands and Easy Language support libraries of the Easy Language system. Programs written in Easy Language need to load the Easy Language support library files when running. On the surface, the EXE program generated by non-independent compilation of Yi Language is small in size. But in fact, if you want to publish the software for use on other people's computers, non-independent compilation will face many problems. Therefore, in actual applications, all independent compilation should be done Compile.
- 2024-01-19 0 814
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- The whole process of Android driver development Chinese WORD version
- Android's hardware abstraction layer, simply put, encapsulates the Linux kernel driver, provides interfaces upward, and shields low-level implementation details. In other words, the hardware support is divided into two layers, one is placed in user space (User Space), and the other is placed in kernel space (Kernel Space). Among them, the hardware abstraction layer runs in user space, and the Linux kernel driver The program runs in kernel space. Interested friends can come and take a look
- 2024-02-02 0 557
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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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- 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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- Python Overview Chinese WORD Version
- This document provides an overview of Python; Python's built-in interfaces to operating system services make it an ideal tool for writing portable management tools and components (sometimes called shell tools) that maintain operating systems. Python programs can search files and directory trees, run other programs, use processes or threads for parallel processing, and more. I hope this document will help friends in need; interested friends can come and take a look.
- 2024-01-23 0 703
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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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- 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
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- Android data storage SQLite database storage Chinese WORD version
- This document mainly talks about Android data storage SQLite database storage; each database in Android is private to the application package suite that created it. By default, other applications cannot directly access this private database. Friends in need can download and take a look
- 2024-02-26 0 1036
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- Matlab implementation of optimization method Chinese WORD version
- The technology of using optimization methods to solve optimization problems is called optimization technology, which includes two aspects: 1) Establishing a mathematical model, that is, using mathematical language to describe the optimization problem. The mathematical relationships in the model reflect the goals and various constraints to be achieved in the optimization problem. 2) Mathematical solution After the mathematical model is built, a reasonable optimization method is selected for solution. Using Matlab's optimization toolbox, you can solve linear programming, nonlinear programming and multi-objective programming problems. Specifically, it includes linear and nonlinear minimization, maximization, quadratic programming, semi-infinite problems,
- 2024-01-18 0 817