In concurrent programming, a Mutex is a commonly used synchronization mechanism to protect critical resources and prevent data races. However, in certain specific scenarios, especially when the lock-holding time is short and the number of threads is limited, a more lightweight lock known as a Spin Lock can provide higher performance.What is a Spin LockA Spin Lock is a form of busy-wait lock. When a thread attempts to acquire a lock held by another thread, it continuously checks the lock's status (i.e., "spins") until the lock is released, at which point it takes ownership. This waiting method ...

In Golang, nil is a predefined identifier that carries different meanings in various contexts, but typically represents "none", "empty" or "zero value". It can be assigned to variables of pointer, slice, map, channel, function, and interface types. Understanding the significance of nil is crucial for writing robust Go programs, as mishandling nil can lead to unexpected issues.nil in PointersIn Go, pointers are a fundamental type that stores the memory address of a variable. When a pointer is declared but not initialized, its value is nil. The following example code illustrates this:package mai...

If you want your establishment to connect to the world, you’re in luck. Thanks to technology development, it’s much easier to do this now more than ever.But with this global expansion, you should have a few assets to help you with your success. To maintain your business reachability no matter where your customer is, you can start with a global phone number provided by companies like Telnum.If you’re not sure if it’s the right move, we’ll help you decide whether it’s the right time for you to get one. In this article, we’ll cover the following:A quick i...

Tesla's Cybertruck commenced its deliveries in the United States this month, marking a significant milestone for the innovative pickup.Distinguished by its unique design, the Cybertruck features a cargo bed panel that opens to facilitate easy loading of goods.This groundbreaking vehicle has achieved numerous world-first distinctions:The world's inaugural stainless steel car, boasting a body reportedly resistant to bullets. Its angular shape adds an extra layer of safety, causing severe collisions with conventional vehicles.The heaviest pickup on the market, weighing 3.5 tons. With passengers a...

Communication is a cornerstone of any organization's success. For nonprofits, communicating effectively with donors, volunteers, and communities can spell the difference between furthering their missions or fading into the background. As technology progresses, so do the means of communication, and text messaging for nonprofit is quickly becoming a crucial tool in maintaining conversations and fostering relationships with key stakeholders. In this article, we will delve into the benefits of this technique and how charities can harness its potential to amplify their impact.Despite text messaging...

PrefaceI am writing this article because I recently noticed in the Python community that there are several frequently asked questions:Why does running the command after installing pip result in a "executable not found" error?Why does importing a module result in a "ModuleNotFound" error?Why can I run my code in PyCharm, but it doesn't work in the command prompt?Rather than just providing solutions, it is better to teach people how to fish. To address these types of issues, you need to understand how Python locates packages. I hope that after reading this article, you will find it helpful.How P...

Previously one can use the https://www.reddit.com/r/rprogramming/top.json API to access one subreddit's top posts. This API doesn't require any access token to fetch the data. However, this API may not work all the time. Reddit may block the API's request if it finds that you are using a script or some app which accesses the API now and then. For an app or script which needs to fetch the data routinely, what should we do?Reddit provides one method which can be used to fetch this kind of top posts data(no need to involve user data) and it requires one to access it with OAuth. In this post,...

The dependency management in Golang is handled using go mod. go mod is the official dependency management tool introduced by the Golang team. It assists developers in managing project dependencies to ensure the stability and maintainability of the project code. In go mod, dependencies are categorized into two types based on how packages are imported in the code: direct dependencies and indirect dependencies. Direct dependencies are explicitly referenced in the project code, while indirect dependencies are dependencies of the direct dependencies. Below we will provide detailed explanations of t...