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- Delphi memory management guidance content PDF version
- The instructive content on Delphi memory management has been excerpted into an e-book in PDF format. This book is an excerpt of the memory management chapter from a Delphi book. It does not involve other aspects of content and is relatively targeted. The content involves traversing memory blocks, shared memory managers, third-party memory managers, Delphi memory management implementation framework, implementation of user call routines, etc.
- 2024-01-19 2 1236
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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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- OpenMP Multi-Threaded Programming Guide WORD Edition
- This document mainly talks about the OpenMP multi-threaded programming guide; OpenMP was proposed by the OpenMP Architecture Review Board and has been widely accepted as a set of guiding notes (Compiler Directive) for multi-threaded programming of shared memory parallel systems. ). OpenMP is a multi-processor multi-thread parallel programming language for shared memory and distributed shared memory. It can be used to display and guide multi-threaded and shared memory parallel application programming interfaces. It is hoped that this document will provide
- 2024-02-03 0 1276
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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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- 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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- 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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- 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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- 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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- 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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- 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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- 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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- Android local data storage Chinese WORD version
- This document is primarily about Android local data storage; the ability to store data locally on a mobile device is a critical feature for applications that need to maintain important information across the execution or lifetime of the application. As a developer, you often need to store information such as user preferences or application configurations. You must also decide based on characteristics such as access visibility whether you need to involve internal or external memory, or whether you need to deal with more complex, structured data types. Follow this article to learn the Android data storage API with
- 2024-02-26 0 808
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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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- Android service Service_detailed explanation WORD version
- This document mainly talks about the detailed explanation of the Android service Service_; Service is one of the four application components in the Android system (for details on other components, see Section 3.2). Services are mainly used for two purposes: background running and cross-process access. By starting a service, you can run specified tasks in the background without displaying the interface, so that it does not affect the user's ability to do other things. Communication between different processes can be achieved through the AIDL service, which is also one of the important uses of the service. I hope this document will help friends in need;
- 2024-01-31 0 660
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- Android development tutorials and notes pdf version
- Android file access and database programming knowledge. File operations mainly include reading files, writing files, reading static files, etc. It also introduces creating, adding file content and saving, opening files and displaying the content; database programming mainly introduces the SQLite database. The use includes knowledge of creating, deleting, opening databases, non-query SQL operation instructions, query SQL instructions-cursors, etc.
- 2024-02-29 12 2490
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- Lucene index database Chinese WORD version
- This document mainly talks about the Lucene index database; Lucene, as an auxiliary tool for full-text search, performs conditional searches for us, whether it is search engines like Google, Baidu, search functions in forums, or other C/ S-architecture search brings great convenience and relatively high efficiency. This article mainly uses Lucene to index MS Sql Server 2000, and then performs full-text indexing. As for the content of the database, it can be the content of the web page or other things. Contents of the database in this article
- 2024-02-29 0 1142
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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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- Adobe official Flash animation optimization guide pdf version
- Tutorials from Adobe's official Flash animation optimization guide, including the following content: How to save memory How to minimize CPU usage How to improve ActionScript 3.0 performance Speed up rendering Speed Optimize network interaction Use audio and video Optimize SQ
- 2024-01-17 5 3654
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- Android development notes: Visual UI design DroidDraw explanation pdf
- New version of Android development notes - visual UI design, explanation of DroidDraw, pdf version, high-definition version, the content is mainly about the use of various interface functions of DroidDraw, and introduces the writing of some examples based on this knowledge, so as to consolidate the application of DroidDraw principle knowledge wait.
- 2024-02-28 0 1082