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Course Elementary 13053

Course Introduction：Scala Tutorial Scala is a multi-paradigm programming language, designed to integrate various features of object-oriented programming and functional programming.

CSS Online Manual

Course Elementary 81531

Course Introduction："CSS Online Manual" is the official CSS online reference manual. This CSS online development manual contains various CSS properties, definitions, usage methods, example operations, etc. It is an indispensable online query manual for WEB programming learners and developers! CSS: Cascading Style Sheets (English full name: Cascading Style Sheets) is an application used to express HTML (Standard Universal Markup Language).

SVG Tutorial

Course Elementary 12624

Course Introduction：SVG is a markup language for vector graphics in HTML5. It maintains powerful drawing capabilities and at the same time has a very high-end interface to operate graphics by directly operating Dom nodes. This "SVG Tutorial" is intended to allow students to master the SVG language and some of its corresponding APIs, combined with the knowledge of 2D drawing, so that students can render and control complex graphics on the page.

AngularJS Chinese Reference Manual

Course Elementary 24069

Course Introduction：In the "AngularJS Chinese Reference Manual", AngularJS extends HTML with new attributes and expressions. AngularJS can build a single page application (SPAs: Single Page Applications). AngularJS is very easy to learn.

Go language tutorial manual

Course Elementary 26834

Course Introduction：Go is a new language, a concurrent, garbage-collected, fast-compiled language. It can compile a large Go program in a few seconds on a single computer. Go provides a model for software construction that makes dependency analysis easier and avoids most C-style include files and library headers. Go is a statically typed language, and its type system has no hierarchy. Therefore users do not need to spend time defining relationships between types, which feels more lightweight than typical object-oriented languages. Go is a completely garbage-collected language and provides basic support for concurrent execution and communication. By its design, Go is intended to provide a method for constructing system software on multi-core machines.

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2017-10-15 00:11:29

Java thread monitoring, thread restart, observer mode issues

Regarding the issue of thread monitoring restart, I read http://www.cnblogs.com/ae6623... The observer pattern introduced in this article I think puts the key code for restarting the thread into the catch block in the thread body. What should I do if the exception is not caught? I don’t know much about Excel exceptions...

2017-05-27 17:41:04

java - The main thread exits without the child thread ending

Today, a bug occurred when running a program, that is, a sub-thread task executed by the main function was launched before it was completed. However, after adding sleep() to the main program, the sub-thread will execute normally and be launched (but it will not work if the sleep time is too short). The debug sub-thread is mainly stuck in executing data...

2017-06-12 09:21:01

python3 PyQt5 multi-thread error, QObject: Cannot

错误信息如下：`QObject: Cannot create children for a parent that is in a different thread.(Parent is QTextDocument(0x27e4150), parent's thread is QThread(0xc306a0), current thread is QThread(0xc0ec...

2017-06-12 09:26:25

Choosing between thread-safe and non-thread-safe PHP: how to make the right decision?

I'm developing a Laravel9.x application in Windows10. My current PHP version is PHP8.1.5(cli)(build:Apr12202217:38:57)(ZTSVisualC++2019x64). Is this a thread-safe version or a non-thread-safe version? how could I know? When should I choose the thread-safe version over the non-thread-safe version? I tried researching this on StackOverflow but the questions/answers I saw all seemed to be ten years or older - something like this

2023-12-23 23:34:59

MoreQ&A

Should I Use `std::thread::join()` or `std::thread::detach()`?

Course Introduction：When to Use std::thread::detach()IntroductionMultithreading can significantly enhance application performance. In C , std::thread offers a...

2024-12-19 comment 0 229

How Can You Ensure Thread-Safety for an ArrayList of Thread Objects in Java?

Course Introduction：Ensuring Thread-Safety of an ArrayList in JavaIssue: An ArrayList used to store Thread objects (RaceCar) in a racing simulation requires thread...

2024-10-27 comment 0 604

When Should You Detach a Thread Using `std::thread::detach()`?

Course Introduction：Understanding the Nuances of std::thread::detach()In multithreaded applications, the use of std::thread provides a means to leverage multiple...

2024-12-09 comment 0 695

Is SimpleDateFormat Thread-Safe?

Course Introduction：SimpleDateFormat's Thread-Safety IssuesDespite Java being renowned for its thread-safe classes, one exception is the SimpleDateFormat class, which...

2024-12-06 comment 0 833

How to Post Tasks to the Android Main Thread from Another Thread?

Course Introduction：Posting Tasks to the Main Thread from Another Thread in Android ServiceIn Android services, when creating threads for background tasks, it may be...

2024-12-09 comment 0 290

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