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Mastering Function Composition in JavaScript: A Guide to Combining Functions for Better Code

Function Composition is a functional programming concept where multiple functions are combined to produce a new function.
In JavaScript, function composition allows us to combine multiple functions that process data in a pipeline-like fashion.
Creating a more generic function to compose multiple functions allows you to dynamically combine multiple functions, making your code more modular and flexible.
Function composition offers several benefits like Reusability, Clarity, Modularity and Maintainability.
While composition is a right-to-left operation (executing functions from right to left), piping is the opposite, as it executes functions from left to right.
Function Composition is a powerful technique that allows you to combine multiple functions into a single function, where the output of one function becomes the input of the next.
You can compose functions manually or by creating a generic compose function.
Composing functions helps create modular, reusable, and maintainable code, particularly in scenarios that involve chaining transformations or data manipulation.
Pipe and Compose are closely related concepts, with the difference being the direction in which the functions are applied (left to right for pipe and right to left for compose).
Function Composition is particularly useful when building data transformation steps that involve chaining transformations or data manipulation.

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Dev

167

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Mastering WeakMap and WeakSet in JavaScript: Efficient Memory Management

WeakMap and WeakSet are similar to Map and Set, but with key differences related to memory management.
Both WeakMap and WeakSet allow for the storage of objects, but they do not prevent garbage collection of keys or values when they are no longer referenced elsewhere.
A WeakMap is a collection of key-value pairs where the keys must be objects, and the values can be any data type.
Keys must be objects, Primitive values like strings or numbers cannot be used as keys.
Garbage collection: If an object used as a key in a WeakMap is no longer referenced, the corresponding key-value pair is automatically removed from the map, which helps to avoid memory leaks.
The value for a given key in WeakMap can be retrieved using get() method.
A WeakSet allows objects to be stored as values and it also allows automatic garbage collection of its elements when there are no references to the object stored in the set.
WeakMap and WeakSet entries are garbage-collected when they are no longer in use, preventing memory leaks.
WeakMap is for key-value pairs with automatic garbage collection of keys, while WeakSet is for unique objects with automatic garbage collection of values.
Both structures are more memory-efficient than regular Map and Set, making them suitable for managing metadata, caching, or tracking objects in a way that prevents memory leaks.

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Dev

353

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Working with Maps and Sets in JavaScript: A Comprehensive Guide

Maps and Sets are two important data structures introduced in ES6 (ECMAScript 2015) that offer enhanced functionality over traditional objects and arrays.
A Map is a collection of key-value pairs where both keys and values can be any data type.
Sets are collections of unique values and are useful when you need to store a collection of unique values.
Both Maps and Sets provide powerful features and can help you manage data in a more structured and efficient way.

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Dev

136

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Similarities of the CodeBehind Framework with the Microsoft WebForms

CodeBehind is a Back-End framework based on .NET version 7 created by Elanat.
WebForms Core technology was added to the core of the CodeBehind framework.
The CodeBehind framework shares similarities with Microsoft WebForms in terms of structure and naming conventions.
WebForms Core allows server-side control management and manipulation of HTML tags.

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PlanetPython

260

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PyCoder��s Weekly: Issue #660 (Dec. 17, 2024)

PyMyFlySpy: Track Your Flight Using Its Headrest Data
Python Set Comprehensions: How and When to Use Them
Typed Python in 2024
JupyterLab 4.3 and Notebook 7.3 Are Available!

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Dev

282

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Can English Replace Java? The Future of Programming in Plain Language

The use of natural languages like English in programming, known as Natural Language Programming (NLP), has gained interest as a way to make programming more accessible.
Benefits of using English in programming include increased accessibility, ease of use, and rapid development.
However, challenges remain in interpreting ambiguous instructions and ensuring efficient performance.
While English may not replace traditional coding languages like Java, incorporating natural language elements can make software development more user-friendly and inclusive.

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Dev

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Building a realtime eye tracking experience with Supabase and WebGazer.js

An experimental project, called Gaze into the Abyss, was created during the Supabase Launch Week Hackathon using Supabase, React, WebGazer.js, Motion One, anime.js, and Stable Audio
Realtime capabilities from Supabase were used to create a simple visual implementation that validates it is possible to use just the realtime features without any database tables
The project visualized Nietzsche's quote about the abyss by staring into a dark screen and having something stare back at you
WebGazer.js, a project that works surprisingly well, was used to create the eye tracking capabilities in one function within a useEffect hook
The eye-tracking capabilities were enhanced with blink detection, which took some trial and error to accomplish, as there are no given blink detection capabilities
An SVG implementation for the eye was created and linked up with eye tracking capabilities to achieve a stylized appearance
Some finishing touches, such as nice intro screen, background music, dark, blurred circle, and animation SVG filter stuff were added to the project
The project is available to check out, and issues may occur if a lot of people are using it, as it requires multiple devices and webcams to test it properly

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Medium

317

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“Have You Ever Felt Like the Most Useless Developer in the Room? (Same)”

If you’ve ever felt like a useless programmer, don’t worry — you’re not alone.
The secret every senior developer won’t admit: they Google everything too.
ChatGPT is a developer’s best-kept secret for quick explanations and problem-solving.
Laugh at yourself and celebrate small coding achievements to stay motivated.

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Medium

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STON.fi:Exciting News for Memecoin Enthusiasts

This move marks a significant milestone for memecoin enthusiasts, providing an unprecedented opportunity to trade their favorite digital assets with minimal fees.
The offer includes fresh tokens from top launchpads, ensuring that users have access to the latest and most exciting memecoins in the market.
With STON.fi, users can trade their favorite memecoins with confidence, knowing that they’re getting the best fees in the market. The platform’s commitment to providing a seamless and secure trading experience makes it the ideal choice for memecoin enthusiasts.
The announcement of reduced trading fees on STON.fi is a game-changer for memecoin lovers. With fees as low as 0.02%, users can now trade their favorite digital assets with minimal costs, making it an exciting time to be a part of the memecoin community.

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Medium

247

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From Zero to Python Hero: Why It’s Never Too Late to Learn Programming

Sarah, like many others, believed that programming was only for young, tech-savvy people with engineering backgrounds.
After a conversation with a friend who worked as a software developer, Sarah decided to challenge her belief and started learning Python.
Despite having no coding experience or computer science degree, Sarah persevered and practiced by writing small programs.
Through her journey, Sarah realized that learning Python opened up endless possibilities and gave her a new sense of confidence.

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Medium

353

Title: "Become a YouTube Star: The Ultimate Guide to Building Your Fame"

Step-by-Step Strategy to Start Your Channel
Secrets of High-Quality Content
Mastering the Algorithm
Monetization: Turn Views Into Revenue

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21 Likes

Medium

344

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Efficient Development with C# Source Generators: Boosting Blazor and Beyond

Source Generators in C# can automate the creation of repetitive components and mappings in Blazor and other projects.
Blazor WebAssembly benefits from Source Generators by eliminating runtime overhead and improving performance.
Source Generators free developers from manual component creation, allowing them to focus on core business logic.
They ensure consistent code structure, reduce human error, and make the codebase more maintainable.

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VentureBeat

101

OpenAI opens up its most powerful model, o1, to third-party developers

OpenAI has opened up its latest, most advanced model O1 to third-party developers through its API, which will make it easier to integrate into real-world applications. Its performance is highly accurate with lower latency, making it good for building tools that solve challenging analytical problems. The O1 series of models offer reasoning capabilities that ensure their answers are correct and avoid hallucinations. Realtime API enhancements include new pricing, WebRTC integration and fine-tuning options. The SDK offerings have been expanded with the addition of beta releases for Java and Go.
OpenAI's release of its production-ready O1 model in full through the API will make it easier for developers to integrate the tech into new or existing apps and workflows.
O1 models take longer to respond to user prompts with answers but ensure their response is accurate and avoids hallucinations.
The new O1-2024-12-17 model was designed to excel at complex, multi-step reasoning tasks like coding, mathematics and visual reasoning tasks.
Structured Outputs and function calling now allow responses to reliably match custom formats such as JSON schemas, simplifying the process of connecting to APIs and databases.
Real-time enhancements include new pricing, WebRTC integration and fine-tuning options, while the Java and Go SDKs have been released to make interaction with OpenAI's models easier.
Preference fine-tuning is new feature, which uses pairwise comparison to teach the model which responses are preferred, particularly effective for subjective tasks like summarization and creative writing.
O1-2024-12-17 offers improved performance, flexibility and lower latency to support real-world applications.
Developers can fine-tune O1's behavior using the new reasoning_effort parameter, which controls how long the model spends on a task to balance performance and response time.
O1 is good for building tools that streamline customer support, optimize logistics or solve challenging analytical problems.

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Dev

233

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Mastering Cross-Platform Development with .NET 9: New Features and Enhanced Support

.NET 9 improves cross-platform development by introducing new features and enhancements.
MAUI, the evolution of Xamarin.Forms, is more powerful and user-friendly in .NET 9, with unified project structure, enhanced performance, expanded control library, and hot reload improvements.
Performance remains a critical focus with JIT compiler enhancements, garbage collection improvements, and application size reduction.
Blazor sees significant upgrades in .NET 9, with the ability to create hybrid apps, improved performance, and an expanded component library.
Improved cloud integration is another significant area of focus in .NET 9, with new libraries and tools for Azure deployment, containerization support, and streamlined workflows for continuous integration and deployment.
Cross-platform mobile apps can be made more efficiently and reliably with .NET 9's MAUI features.
Blazor's enhanced capabilities in .NET 9 make it a strong choice for building interactive and high-performance web applications.
Optimizing code for performance, leveraging shared codebases, utilizing platform-specific features wisely, and implementing robust testing are essential best practices for multiplatform development in .NET 9.
In conclusion, .NET 9 empowers developers to create high-quality, maintainable, and scalable applications across all platforms.

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Johndcook

207

Pressing the cosine key over and over

No matter what number you start with, if you press the cos key on a calculator repeatedly, the numbers eventually quit changing.
Starting with iteration 90, the code prints 0.7390851332151607 every time.
The iteration converges for any starting point between 0 and 1.
The rate of convergence is more like sin(p)k near the fixed point.

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