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Teaching Kids HTML: A Fun Introduction to Web Development (Part 1 of Series)

Introduce kids to HTML as the language behind every website in a beginner-friendly and engaging way.
Teaching HTML to kids allows them to see immediate results, builds logical thinking, empowers creativity, and forms the foundation for future tech skills.
Steps to teach HTML to kids include explaining how websites work, starting with basic tags, using kid-friendly editors, and building mini-projects like creating a webpage about a pet.
Additional resources like Code.org HTML Course, Khan Academy HTML Basics, and Scratch + HTML Integration are available for further learning, with upcoming topics in the series covering CSS and JavaScript.

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Dev

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Full Stack Tips for Senior Software Engineers

Senior Software Engineers are expected to have expertise in both frontend and backend development, system design, DevOps, and best practices to build scalable applications.
Key tips include mastering frontend and backend, optimizing performance, prioritizing security measures, writing clean and testable code, embracing DevOps and CI/CD, designing scalable systems, and effectively mentoring and collaborating.
Senior engineers should focus on understanding how backend decisions impact frontend performance, optimizing at every level, and making security a priority by implementing best practices for both frontend and backend.
Additionally, they should write clean, maintainable, and testable code, adopt DevOps practices, design scalable systems, and effectively mentor and collaborate to excel in their role.

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Javacodegeeks

297

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Count Files Recursively in Java

Working with file systems in Java often involves counting files recursively in a directory tree.
Java provides various methods for this task, including traditional java.io.File and modern java.nio.file package.
The goal is to navigate nested directories, differentiate files from folders, handle exceptions, and scale well.
A traditional recursive method using java.io.File involves traversing the directory tree and incrementing a count for each file.
The program checks directory validity, recursively counts files, and prints the total count using java.io.File.
Java NIO's Files.walk() method introduced in Java 7 offers a modern approach to count files using a Stream of Paths.
The FileCounterNIO program validates the directory path, filters out directories, and counts regular files using Files.walk().
Files.walk() combined with Stream API provides a concise and efficient way to count files in a directory.
The NIO approach is preferred for its readability, scalability, and performance advantages, especially in large directory structures.
Both traditional recursive methods and modern NIO approach effectively solve the file-counting problem in Java.

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Dev

256

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How to Stack Bar Charts with AM Charts 4 in JavaScript?

Enhance your AM Charts 4 bar chart with stacked columns for effective data visualization.
Stacked bars can overlap due to misaligned dataFields and template configurations.
Define stacked column series with correct properties like stacked, clustered, and width.
Ensure data complements the series configuration and consider adding a category axis for full chart width.

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Self-Learning-Java

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Accessing Request Headers by Name in Javalin

Javalin's Context.header() method allows accessing request headers by name.
The example demonstrates retrieving the 'expire_after' header value using ctx.header("expire_after").
The provided steps guide you in creating a Maven project and setting up dependencies for reading request headers by name in Javalin.
The main application class App.java showcases how to read request headers and return them in JSON format using Javalin.

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Medium

366

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Interview Question: Implementing LRU Cache

LRU (Least Recently Used) cache is a data structure that stores a limited number of items, prioritizing recently accessed items for fast access.
Caching involves temporarily storing frequently accessed data to reduce access time.
Cache Eviction is the process of removing items from the cache to free up space when it's full.
Cache Hit occurs when requested data is found in the cache, leading to fast retrieval; Cache Miss happens when the data is not present, necessitating retrieval from slower primary storage.

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RealPython

151

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How to Use Loguru for Simpler Python Logging

Logging in Python is essential for tracking and debugging applications.
Loguru is a Python library offering simplified and intuitive logging capabilities.
It allows for immediate logging without complex configurations and supports custom log formats.
Loguru also provides features like automatic log rotation, powerful debugging, and structured logging for modern applications.

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Dev

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Tired of using pprint to debug nested lists? Try visual structure tracing.

Introducing SetPrint - a Python library designed to show structure for debugging, offering a side-by-side comparison with pprint.
Features real-world examples like image data and confusion matrices, along with benchmarks and 5 essential tips for structured debugging.
SetPrint allows for clear visualization of nested data structures, offering advantages over pprint in terms of clarity at the cost of slight speed.
The library offers customization options for displaying data at different depth levels and supports various styles to enhance data presentation.

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Dev

265

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✨ 7 Things I Do Regularly as a Senior Frontend Developer

To become a confident senior frontend developer, it is important to educate yourself outside of work by reading books, blog posts, and watching courses regularly.
Working on different projects and skills every month helps prevent becoming stagnant, making you more adaptable and flexible in solving problems.
Getting enough rest is crucial for maintaining a sharp mind and writing cleaner code, as lack of sleep can lead to more bugs in the code.
Staying updated on frontend trends and technologies is essential to avoid becoming obsolete in the ever-evolving tech industry.

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PlanetPython

443

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Django Weblog: Django security releases issued: 5.2.1, 5.1.9 and 4.2.21

Django security releases for versions 5.2.1, 5.1.9, and 4.2.21 have been issued to address CVE-2025-32873 related to a denial-of-service possibility in strip_tags().
The vulnerability in django.utils.html.strip_tags() could result in slow evaluation of certain inputs with large incomplete HTML tags, affecting the striptags template filter.
Patches have been applied to Django's main, 5.2, 5.1, and 4.2 branches to resolve the issue, and users are advised to upgrade promptly to mitigate the security risk.
The Django team advises reporting security issues via private email to [email protected] and not through public platforms like Trac or the Django Forum.

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Johndcook

Converting between quaternions and rotation matrices

Quaternions offer advantages in representing rotations and can be converted to rotation matrices.
Converting a rotation matrix to a quaternion involves using the Chiaverini-Siciliano method.
Quaternions and 3 by 3 matrices have three degrees of freedom each, despite differences in the number of components.
Python code snippets provided for converting between quaternions and rotation matrices, along with random testing for verification.

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Johndcook

178

Composing rotations using quaternions

Every rotation in 3D fixes an axis, as per Euler’s rotation theorem from 1775.
The composition of two rotations is a rotation, where the first rotation fixes an axis, the second rotation fixes another axis, and the composition fixes a third axis.
To represent rotations using quaternions: a rotation by θ about an axis given by a unit vector v corresponds to a specific quaternion.
Composing rotations represented by quaternions is straightforward, as rotating by two quaternions q and r is equivalent to rotating by rq.

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PlanetPython

238

Python Insider: Python 3.14.0 beta 1 is here!

Python 3.14.0 beta 1 is the first beta release of Python 3.14, offering a preview of the upcoming features and changes.
Maintainers of third-party Python projects are encouraged to test with 3.14 during the beta phase and report any issues.
Some major new features in Python 3.14 include deferred evaluation of type annotations and Template string literals (t-strings).
The release also introduces a new module for Zstandard compression and improved C API for configuring Python.
UUID versions 6-8 are now supported, and there are enhancements in error messages and built-in HMAC.
Python 3.14 does not recommend use in production environments and aims for minimal code changes after the first release candidate.
Build changes in Python 3.14 include no PGP signatures for release artifacts and an experimental JIT compiler in macOS and Windows binaries.
The release also incorporates improvements in the Python install manager, recommending a new install manager for Windows.
Python 3.14 beta 2 is scheduled for 2025-05-27, with ongoing efforts to enhance the release.
The article also delves into the history of the mathematical constant pi and its symbol origins, shedding light on early mathematicians' contributions.

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Dev

247

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Cursor is now free for Students

Cursor, an AI coding editor, is now free for students.
Cursor offers features like an AI pair programmer and code understanding.
It is emphasized that tools like Cursor are enhancers, not shortcuts, to learning coding.
The key is to first learn to think in code, then utilize AI tools for speed and effectiveness.

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Dev

155

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Shallow Copy Vs Deep Copy

Shallow copy in JavaScript involves copying only the top level of an object or array, not fully copying nested objects or arrays which results in changes reflecting in original as well.
Deep copy in JavaScript involves copying everything including nested objects or arrays, creating a totally separate copy from the original, preventing changes in original from affecting the copy.
Shallow copy can be achieved using methods like Object.assign() or spread operator, while deep copy can be done using JSON methods like JSON.parse(JSON.stringify()) or libraries like Lodash.
It is recommended to use shallow copy for simple objects where full separation is not needed, and deep copy for objects with nested data when a completely independent copy is required to avoid unexpected bugs.

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