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Self-Learning-Java

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Game Objects in KAPLAY

Game objects are the core components that represent all entities in the game.
Key features of game objects include acting, components, interaction, and behavior.
Game objects are created using components and the add() function in KAPLAY.
The project example demonstrates the creation of rectangles, circles, and sprites in the KAPLAY game engine.

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Self-Learning-Java

194

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Getting Started with Kaboom.js: Build Your First Platformer Game with Gravity, Jumping, and Movement

This article introduces Kaboom.js, a beginner-friendly library for creating games, by creating a platformer game with movement and jumping features.
Key learnings include utilizing gravity, adding player sprites, implementing physics, creating platforms, and enabling collision detection.
The 'body()' method in Kaboom.js simulates real-world physics like gravity, velocity, momentum, and forces for game objects.
The 'area()' method acts as a collision detector, defining interaction spaces for objects in the game.
Static platforms can be created using 'body({ isStatic: true })' for objects unaffected by gravity, aiding player movement and interactions.
Player behaviors like jumping, horizontal movement, and screen boundaries are defined in the code to enhance gameplay.
Running the Kaboom.js project involves initializing the canvas, setting gravity, loading sprites, and adding interactive elements.
The provided code snippets and explanations help beginners understand game development concepts and Kaboom.js functionality.
By following the step-by-step instructions, users can build a complete platformer game using Kaboom.js.
Finally, the article offers a demo link and resources for further exploration and learning in game development.

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Dev

181

Image Credit: Dev

Apache Pyspark

Apache PySpark is a fast and general-purpose distributed computing system for big data processing.
Key features of PySpark include in-memory processing, scalability, ease of use, and a unified analytics engine.
Spark, with its in-memory computations, offers faster processing than disk-based frameworks like Hadoop MapReduce.
PySpark is the Python API for Apache Spark, allowing users to leverage Spark's capabilities using Python.

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Dev

394

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2140. Solving Questions With Brainpower

Given a 0-indexed 2D integer array 'questions' representing an exam where each question has points and brainpower constraints.
The task is to maximize points by solving questions considering brainpower limitations.
Dynamic Programming is suggested to decide the most optimal option for each question.
Solution involves DP array to track maximum points starting from each question.
For each question, two choices exist: solve with constraints or skip to the next.
Reverse iteration helps in considering each question's impact on future questions.
The algorithm efficiently determines the maximum points earned from solving exam questions.
Initialization of DP array and iterating from last question aids in optimal point calculation.
The approach computes the solution in O(n) time and space complexity for large input sizes.
Dynamic Programming is a powerful technique for optimizing decision-making processes in various scenarios.

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Towards Data Science

373

A Simple Implementation of the Attention Mechanism from Scratch

The Attention Mechanism is crucial in tasks like Machine Translation to focus on important words for prediction.
It helped RNNs mitigate the vanishing gradient problem and capture long-range dependencies among words.
Self-attention in Transformers provides information on the correlation between words in the same sequence.
It generates attention weights for each token based on other tokens in the sequence.
By multiplying query and key vectors and applying softmax, attention weights are obtained.
Multi-head Self-Attention in Transformers uses multiple sets of matrices to capture diverse relationships among tokens.
The dense vectors from each head are concatenated and linearly transformed to get the final output.
The implementation involves generating query, key, and value vectors for each token and calculating attention scores.
Softmax is applied to get attention weights, and the final context-aware vector is computed for each token.
A multi-head attention mechanism with separate weight matrices for each head is used to improve relationship capture.

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Dev

438

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Mastering httpResource Equality in Angular

The httpResource function in Angular 19.2.0 simplifies data fetching using signals, handling subscriptions and updates seamlessly.
HttpResourceOptions in Angular include properties like injector, defaultValue, parse, and equal for managing httpResource.
The equal function compares httpResource results to optimize performance by preventing unnecessary updates in Angular.
To set up Angular with httpResource, ensure the Angular CLI is installed and create or update a project.
A demo setting up a jokeResource httpResource to fetch programming jokes illustrates how the equal option works.
Installing Zod library and defining a Zod schema to validate and transform HTTP responses for the joke data.
The equality function in Angular compares jokes by ID to prevent unnecessary change detection cycles.
The httpResource function simplifies asynchronous data handling and integrates with Angular's reactive programming model.
httpResource is designed to work with signals for data fetching while HttpClient remains essential for complex HTTP interactions.
The httpResource function, with the equal option, optimizes data fetching performance in Angular applications efficiently.

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Towards Data Science

200

Create Your Supply Chain Analytics Portfolio to Land Your Dream Job

Supply Chain Analytics is crucial for resilient operations in today's volatile supply chain landscape, driven by factors like climate disruptions and geopolitical shifts.
The article discusses building a supply chain analytics portfolio with actual projects, presenting insights from the author's nine years of industry experience.
The Supply Chain Analytics Cheat Sheet provides tools, methodologies, and case studies to extract insights and optimize supply chain solutions.
It covers topics like data analytics for business strategy, logistics operations optimization, supply chain flow optimization, and sustainability.
Readers are guided on how to leverage analytics to boost profitability, optimize supply chain operations, and support sustainability initiatives.
The article suggests starting with a simple project, adding business value, refactoring code, and improving user interface to build a strong analytics portfolio.
By showcasing practical applications of analytics in supply chains, aspiring data scientists can demonstrate their skills and potentially land job opportunities in the field.
The author also emphasizes the importance of understanding business needs, packaging code for deployment, and enhancing insights for effective analytics solutions.
Overall, leveraging supply chain analytics through portfolio projects can showcase expertise and creativity in applying data-driven solutions to real-world challenges.
The article encourages readers to engage with the author's content, use the provided resources to enhance their skills, and contribute to the analytics community.
Building a strong portfolio in supply chain analytics can open doors to exciting career opportunities and enable individuals to make a tangible impact in the industry.

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Idownloadblog

412

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g1lbertJB untethered jailbreak for iOS 5.0-6.1.2 updated with support for Windows machines

g1lbertJB is an untethered jailbreak that supports iOS 5.0-6.1.2.
The latest update adds official support for Windows machines.
It is still actively maintained and has bug fixes for Linux builds.
g1lbertJB allows jailbreaking iPhone 3GS, 4, and 4S models.

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24 Likes

Medium

287

Image Credit: Medium

Codeium Windsurf: The AI-Powered IDE That Supercharges Your Coding!

Codeium Windsurf is an AI-powered IDE that enhances coding experience.
It offers smart code suggestions, real-time assistance, and advanced autocompletion.
Users can collaborate with AI or let it handle complex tasks autonomously.
The IDE is available for Windows, Mac, and Linux and can be configured with settings from other IDEs like VS Code.

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17 Likes

Medium

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Best apps for the month — April 2025

Superlist is an iOS app that offers efficient task management and to-do list features.
Quizlet is an iOS app focused on flashcard-based learning, offering a large database of existing flashcard sets and various types of tests.
Pushbullet is a popular Android app for communicating between devices, enabling file sharing, notification mirroring, and messaging.
Moises is a creative app that allows users to extract or eliminate vocals and instruments from any song, offering unique possibilities for musicians and music enthusiasts.

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3 Likes

Dev

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Introducing HTML++ – The Future of Web Development

HTML++ is introduced as a full-stack HTML programming language.
HTML++ aims to simplify web development by eliminating the need for other languages such as JavaScript and CSS.
Features of HTML++ include AI-driven code generation, blockchain-powered forms, and AI-powered debugging.
The language incorporates
elements and offers a low-code-no-code development approach.

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1 Like

Dev

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Daily JavaScript Challenge #JS-140: Binary Gap Length

The challenge is to determine the length of the longest sequence of consecutive zeros in the binary representation of a given positive integer.
The sequence should be surrounded by ones at both ends.
Developers are encouraged to write a JavaScript function to solve this challenge.
The challenge difficulty is medium.

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Spring

301

Image Credit: Spring

This Week in Sprng - April 1st, 2025

Spring Boot 1.0 celebrates its 11th anniversary on April 1st.
AWS and Spring AI collaborate on new MCP integrations.
A Bootiful Podcast discusses build packs, production, Docker, and more.
Various updates and contents related to Spring and Java ecosystem.

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18 Likes

Medium

208

Tracking Laps with UWB and Raspberry Pi — My Custom Swim Timer Project

The author developed a custom swim timer project using UWB and Raspberry Pi.
The goal was to create a portable, affordable, and wireless system to track and improve swimming performance.
The project involved learning about circuits, batteries, soldering, power limits, wireless communication, and timing accuracy.
The author plans to share detailed logs, videos, and tutorials for others to follow along or build their own version.

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12 Likes

Medium

416

Image Credit: Medium

Life and the Dual Sheet Model in Python

The article discusses a model known as the Dual Sheet Model (DSM) implemented in Python, analyzing the universe's expansion and growth.
Real-world data on redshift (z), stretchiness (w), growth speed (H), and possible errors are provided for comparison in the DSM.
Simulation equations and events are defined to track the evolution of fields, energy, growth rates, and quantum fluctuations over time.
The DSM simulates how each 'sheet' in the model grows, influenced by field strengths, matter, antimatter, and quantum effects.
Model observables like redshift, stretchiness, growth speed, entropy, and life potential are calculated to assess the universe's conditions for life.
A method to compare the DSM with real data using a chi-squared metric is presented, finding the best parameters for the model.
Visualization of the model versus real data is shown through plots of stretchiness, growth speed, matter-antimatter balance, entropy, and life potential over time.
The article concludes by exploring the potential emergence of life based on the model's predictions and analyzing the conditions for life in the evolving universe.

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