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Send Automated WhatsApp Messages with n8n and Wassenger

Wassenger is a versatile WhatsApp Team Chat and API solution for business messaging to automate anything on WhatsApp.
You have two options to install Wassenger within n8n.
To get started, install the package in your n8n root directory. After installation, restart your n8n instance.
To receive events from Wassenger or other external services, you’ll need to configure n8n with a publicly accessible URL. By default, n8n runs locally and generates webhook URLs using localhost, which external services cannot reach.

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Dev

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Enhancing Graphics Performance with OffscreenCanvas and D3.js

Rendering complex graphics efficiently in web applications has always been a challenge due to JavaScript's single-threaded nature.
The introduction of OffscreenCanvas provides a solution by enabling rendering operations in Web Workers, significantly improving performance for graphics-intensive applications.
This article explores how OffscreenCanvas works, how to use it effectively with D3.js, and its real-world application in an analytics website with multiple dashboards.
OffscreenCanvas, combined with D3.js, is a powerful tool for building high-performance analytics dashboards, significantly enhancing performance and improving user experiences.

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Dev

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🚀 React Devs, Level Up Your Skills! 💡

Keep Components Reusable – Break down UI into small, manageable components. DRY (Don’t Repeat Yourself) saves time!
Use Error Boundaries – Catch UI crashes using to improve user experience.
Code Splitting & Lazy Loading – Use React.lazy() & Suspense to improve performance by loading components only when needed.
Strict Mode for Better Debugging – Wrap your app in to detect potential issues in development.

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Dev

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🚀 Mastering React: Tips for Devs! 🎯

Use Functional Components & Hooks for easier state management.
Optimize Performance with React.memo, useCallback, and useMemo.
Choose the appropriate state management tools based on app size: Context API, Redux/Zustand/Recoil.
Leverage Next.js for Server-Side Rendering (SSR) & Static Site Generation (SSG).

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Medium

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Artificial Intelligence Use in Smartphones Grows 250% in the Last Five Months

According to the Samsung report, there are 200 million Galaxy smartphones in Latin America that integrate artificial intelligence.
AI features have been used 1.157 billion times in the region.
AI tools are available on mid-range smartphones like the Galaxy A56.
Notable AI features include Circle to Search, Song Search, Best Face, Smart Object Eraser, and Filters.

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Medium

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Why Computer Science Students Should Learn AI Agent Development — Key Benefits Explained!

AI brings many advantages to creating active agents that work on behalf of the user.
AI agents are able to think, learn, reason, make decisions, and communicate like humans.
AI agents are mainly based on Large Language Models (LLM), which work as the brain of the agent.
Positions in AI development, such as AI product managers, AI development engineers, AI algorithm engineers, AI trainers, and large model development engineers, offer great opportunities in the future.

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Lostmoa

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Method dispatch mechanisms in Swift: static and dynamic dispatch

Method dispatch in Swift involves dynamic and static dispatch mechanisms, each with its own implications for performance and flexibility.
Dynamic dispatch is resolved at runtime based on the object's actual type, utilizing mechanisms like virtual tables for classes and witness tables for protocols.
Static dispatch, on the other hand, is determined at compile time based on the declared type of the variable, avoiding runtime overhead and enabling optimizations like inlining.
Dynamic dispatch is used for overridable class methods, protocol requirements, and interactions with Objective-C or virtual C++ methods, offering flexibility for dynamic behavior.
Static dispatch, on the contrary, is applied to value types, final classes, private methods, and non-requirement methods in protocol extensions to ensure efficient execution without runtime lookups.
Dynamic dispatch examples include overridable class methods where different types respond uniquely, protocol requirements ensuring polymorphism, and calls to Objective-C or virtual C++ methods.
Static dispatch scenarios involve methods on value types like structs, final classes preventing overriding, private class declarations ensuring no subclassing, and protocol extension methods resolved statically.
To optimize performance, marking classes as final, using private or fileprivate declarations, and minimizing unnecessary dynamic dispatch through careful protocol design are recommended.
Enabling Whole Module Optimization (WMO) and avoiding excessive Objective-C interoperability can further enhance performance by reducing unnecessary indirection.
Profiling with Instruments can identify dispatch-related overhead, guiding developers to focus on areas where optimization efforts will have the most significant impact.
For advanced Swift developers looking to enhance their skills, resources like the book Swift Gems can provide valuable insights into optimizing code for improved clarity, speed, and maintainability.

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Dev

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downloadInBrowser function in Refine source code.

The function downloadInBrowser in the Refine source code is reviewed.
The function accepts three parameters: filename, content, and type.
It creates a blob with the content and type, and then creates a download link for the file.
After the file is downloaded, the function removes the link and the blob from memory.

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Medium

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Learning A New Programming Language

The question at hand is whether it is better to learn a new programming language through books or online tutorials.
The author, who comes from an older generation, preferred learning through books.
Reading an entire book provided a thorough understanding and cleared the fundamentals of the topic.
Online tutorials, on the other hand, offer rudimentary knowledge and are suitable for organizations that lack proper training programs.

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Medium

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Middleware vs. Service Layer: Understanding the Key Differences in Node.js

Middleware in Express.js is a function that executes before the request reaches the controller or route handler.
The authMiddleware ensures only authenticated users can access /profile.
The service layer contains the business logic of the application and acts as an abstraction layer between the controller and the database.
By properly structuring the code, a maintainable, scalable, and testable application can be created.

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Medium

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Pharo in a Nutshell: A Dummy’s Guide to Smalltalk Programming

Alan Kay, known for coining the term 'Object Oriented Programming,' envisioned encapsulated mini-computers communicating via message passing inspired by biological systems.
Smalltalk was developed by Alan Kay, Dan Ingalls, Adele Goldberg, and others at Xerox PARC, emphasizing messaging over objects themselves in OOP.
Object-oriented programming essentials include message passing, encapsulation, and dynamic binding, with a focus on dynamic behavior rather than class hierarchies.
Smalltalk evolved from Smalltalk-71 to Smalltalk-80, with the latter becoming widely known for its minimal syntax and focus on message passing.
In Smalltalk, everything is an object, including control structures implemented as methods, emphasizing pure object-oriented principles.
Objects in Smalltalk can hold state, receive messages, and send messages, with message passing being the core mechanism for computation.
Pharo is a modern Smalltalk implementation, emphasizing the importance of understanding message passing for effective Smalltalk programming.
Pharo provides a user-friendly interface with components like the Playground, Transcript, and Class Browser for writing, displaying output, and managing classes respectively.
Smalltalk's message passing philosophy in Pharo differs from popular OOP languages, reflecting its pure object-oriented nature and adherence to Alan Kay's vision.
This summary provides a foundational understanding of Smalltalk, message passing, and the unique approach to programming in Pharo.

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Medium

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I tested out all of the best language models for frontend development. One model stood out.

DeepSeek V3 and Google's Gemini 2.5 Pro outperformed other language models in benchmark tests for frontend development.
The article explores how these models perform on a frontend development task related to building an algorithmic trading platform feature called 'Deep Dives'.
Language models like Grok 3, Gemini 2.5 Pro, DeepSeek V3, and Claude 3.7 Sonnet were tested for generating a landing page for the feature.
Grok 3 produced basic output, while Gemini 2.5 Pro excelled, ultimately outperformed by DeepSeek V3 and Claude 3.7 Sonnet.
Claude 3.7 Sonnet stood out by delivering sophisticated frontend landing pages with new components and SEO-optimized content.
All models produced clean, readable code, but differences in visual elements and code quality were notable.
Gemini 2.5 Pro and Claude 3.7 Sonnet utilized templates effectively, while Claude excelled in producing high-quality, maintainable code.
While Claude 3.7 Sonnet was top in code quality, factors like manual cleanup, cost-performance trade-offs, and model capabilities influenced the choice.
The comparison shows AI's advancement in handling complex frontend tasks, with Claude 3.7 Sonnet emerging as the preferred model for quality and design aesthetics.
Ultimately, the choice of a language model depends on priorities such as quality, speed, and cost in frontend development workflow.
The article highlights the progress in AI's frontend development capabilities, emphasizing Claude 3.7 Sonnet's superior output balanced with human oversight needs.

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Medium

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Uganda: A Nation with a Mad Man’s Body

Uganda's infrastructure is decaying, hindering progress akin to a mad man struggling to walk.
The economy in Uganda is suffering from heavy taxation, corruption, and poor policies.
Maternal healthcare is inadequate, leading to high maternal mortality rates.
Ugandan workforce faces exploitation and limited rewards.
Education system in Uganda is costly and ineffective, leaving many without skills.
Governance in Uganda suppresses dissent and fails to deliver justice.
Tribalism in leadership exacerbates inequality, further dividing the nation.
Uganda's leadership manipulates and pits its own people and institutions against each other.
Uganda's youth are seen as the key to awakening a subconscious power for change.
The article emphasizes the importance of unity and action to overcome the challenges in Uganda.

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Medium

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Export Your Entire Code Repo into an LLM Prompt with RepoScribe

RepoScribe is introduced as a solution to leverage large language models (LLMs) for codebases.
RepoScribe intelligently filters code directories and concatenates file content to create a single prompt.
It provides a text-based file tree representation to navigate the concatenated file.
The tool helps in enhancing workflows by enabling deeper interactions with codebases.

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Dev

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Building Your First Android App: A Beginner's Guide

This guide provides a step-by-step beginner's guide for building your first Android app.
It starts by setting up Android Studio and understanding the project structure.
Then, it walks through designing the user interface and adding functionality with Kotlin.
Finally, it covers running the app, adding a second activity, and publishing the app on the Google Play Store.

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