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Medium
2w
42
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A Memory Leak Story of Map(Go vs. Rust)
- The author shares their experience of encountering a memory leak in a Go map implementation.
- Despite deleting items from a Go map, the underlying memory is not shrunk.
- The map implementation holds onto the memory even after removing entries.
- The author performs a test to confirm the behavior.
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2 Likes
Medium
2w
21
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Build Real World AI Applications with Gemini and Imagen: A Skill Badge offered by Google
- The badge program introduced Gemini, Google’s multimodal AI model, and Imagen, the text-to-image diffusion model.
- Participants learned how to interact with Gemini through the Vertex AI API, focusing on prompt engineering and different learning techniques.
- Imagen allowed participants to generate high-quality images from textual descriptions and manipulate images realistically.
- The program emphasized the integration of Gemini and Imagen to build end-to-end AI applications, showcasing the power of combining different AI modalities.
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Medium
2w
184
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Should programmers know what happens inside a computer?
- Fast running code in programming means minimizing the number of machine instructions to be executed.
- A smart programmer swapped the initialization order of a 2D array and found a significant difference in execution time.
- The difference in execution time was due to the way data is stored in memory and the number of page swaps required.
- The page swapping process, which is slower than fetching data from RAM, caused a considerable time difference.
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11 Likes
Dev
2w
287
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Daily JavaScript Challenge #JS-154: Currency String Parser
- Daily JavaScript Challenge: Currency String Parser
- Difficulty: Medium
- Write a function that parses a currency string (e.g., "$123.45") and returns its numerical value as a float number without the currency symbol.
- Join the Discussion! How did you approach this problem? Did you find any interesting edge cases? What was your biggest learning from this challenge?
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Speckyboy
2w
154
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8 Comic-Inspired Snippets Powered by CSS & JavaScript
- Comics have served as an inspiration to many in web design.
- Advancements in CSS and JavaScript allow designers to bring comic styles to websites.
- Examples include comic-style text bubbles, side scroller web templates, comic book UIs, and more.
- Comic styles offer a fun and memorable user experience while adding some pop to the web.
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9 Likes
Dev
2w
408
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Daily JavaScript Challenge #JS-153: Identify Unique Words in a Sentence
- Given a sentence, return an array with all the unique words. Ignore punctuation and case sensitivity.
- Difficulty: Medium
- Topic: String Manipulation
- Check out the documentation about this topic here: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions
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24 Likes
Johndcook
2w
171
Erdős-Mordell triangle theorem
- The Erdős-Mordell theorem states that from any interior point within a given triangle, the distances to the vertices are at least twice the distances to the sides.
- The theorem was conjectured by Paul Erdős in 1935 and proved by Louis Mordell in the same year. It states that OA + OB + OC ≥ 2(OD + OE + OF), where O is the interior point and OA, OB, OC are the distances to the vertices, and OD, OE, OF are the distances to the sides.
- The theorem holds true for any triangle, and equality occurs only when the triangle is equilateral.
- Hojoo Lee provided an elementary proof of the Erdős-Mordell theorem in 2001. There is also a generalized version of the theorem that involves weighted distances to the vertices and sides.
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Dev
2w
124
Image Credit: Dev
Data Races in Go: What They Are and Why You Should Care
- A data race in Go occurs when two or more goroutines access the same memory location simultaneously without proper synchronization, leading to unpredictable behavior.
- Data races are problematic as they can cause real, hard-to-reproduce issues, such as incorrect results, deadlocks, and program crashes.
- Spotting data races in Go is made easier by using the built-in race detector tool, which detects inconsistencies in shared memory access.
- To solve data races, Go offers tools like mutexes, atomic operations, and channels for coordinating access to shared data.
- Using a mutex with sync.Mutex ensures one goroutine accesses a piece of code at a time, effectively preventing data races for shared variables.
- The sync/atomic package provides lock-free alternatives for basic numeric operations, making it efficient but limited to specific use cases.
- Channels, a Go-native synchronization tool, allow safe coordination of shared state by passing values through channels rather than directly accessing them.
- Choosing the right tool (mutex, atomic, or channel) depends on the complexity and nature of shared data to effectively prevent data races in Go programs.
- To avoid unexpected bugs due to data races, it is essential to coordinate access to shared data using the appropriate synchronization tools provided by Go.
- In summary, Go provides simple and efficient mechanisms like mutexes, channels, and atomic operations to detect, prevent, and resolve data races for concurrent programming.
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7 Likes
Dev
2w
85
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Trigonometry Tricks: The Math Behind Game Effects
- Math is crucial in game development, particularly trigonometry for adding visual effects and enhancing the game feel.
- Trigonometry, including sine and cosine functions, plays a vital role in creating smooth and dynamic movements in games.
- Understanding the unit circle and utilizing trigonometric functions can bring life to in-game systems and animations.
- Visual effects like circular movements, subtle pulses, oscillations, arcing projectiles, and more can be achieved using trigonometry.
- Trigonometry aids in game logic, allowing for more flexibility and creativity in implementing game mechanics.
- Learning trigonometry may seem daunting at first, but with practice and application, it becomes a valuable tool in game development.
- Functions like atan2(y, x) are essential for calculating angles on a Cartesian plane in games, while trig plays a significant role in bullet hell games and advanced shaders.
- Incorporating math concepts like sine and cosine can elevate game development and lead to impressive outcomes.
- Embracing trigonometry in game creation can unlock new possibilities and enhance the overall gaming experience.
- By incorporating trigonometry tricks, games can become more engaging and visually stimulating, showcasing the power of mathematics in game design.
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5 Likes
Medium
2w
326
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The Docker Conspiracy: 5 Hidden Costs Nobody Warns You About
- Docker comes with hidden costs that nobody seems to talk about.
- Improper Docker configuration can create a resource consumption black hole.
- Container overhead compounds exponentially as you scale.
- CPU utilization can spike significantly in production compared to non-containerized deployments.
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19 Likes
Medium
2w
409
Introduction to Version Control Using Git
- Version control is essential in software development for tracking and managing code changes over time, with Git being the most widely used system today.
- Git was created by Linus Torvalds to efficiently handle distributed collaboration, particularly for managing contributions to the Linux operating system.
- Version control ensures tracking of changes, enabling reverting to previous versions and managing multiple versions from a single source.
- Git is crucial in the open-source world for managing contributions and integrating changes smoothly among global collaborators.
- Setting up a Git repository involves initializing it and tracking changes by adding files and committing those changes.
- Branches in Git allow for working on different features or bug fixes independently, enabling easy merging back into the main branch.
- Collaboration with Git involves utilizing remote repositories like GitHub and pushing local changes, as well as pulling changes made by other team members.
- By mastering Git basics, individuals can effectively manage projects and collaborate with others in a seamless manner.
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24 Likes
Medium
2w
404
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How I Use Transferable Skills To Learn New Technologies Faster
- Transferable skills can help cut learning time significantly, by leveraging what you already know.
- Approaching new technologies as starting from scratch is a mistake, as many share similar logic and approaches.
- Identifying core ideas that overlap across technologies makes learning about connecting the dots, rather than memorizing everything.
- Real-world problem-solving becomes the focus when learning something new.
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23 Likes
Dev
2w
373
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Creating a Reusable Modal Component With Portals in React
- Modals are a common UI pattern, but rendering them outside the main DOM tree can prevent styling and focus issues.
- In this tutorial, you'll learn to create a flexible, reusable modal component using portals.
- With React portals, you can build modals that behave correctly across your app.
- This pattern also scales well when you need tooltips, dropdowns, or any layered UI components.
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22 Likes
Dev
2w
30
Image Credit: Dev
Building a Custom Markdown Editor in React With Live Preview
- A custom markdown editor is a powerful addition to any developer toolset. In this guide, we'll build one from scratch using React, with real-time preview functionality — perfect for blogs, note apps, or internal tools.
- Step 1: Set Up Your React Project
- Step 2: Build the Editor Component
- Step 4: Optional Enhancements
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1 Like
Medium
2w
921
Image Credit: Medium
Will AI Shrink the Demand for DevOps Engineers?
- AI tools may automate certain tasks in DevOps, but they cannot replace human judgment and experience in troubleshooting and fixing issues.
- While AI can generate code and automate processes, it struggles with debugging legacy systems or handling unexpected outages.
- DevOps engineers play a crucial role in explaining tool configurations and addressing challenges that AI cannot yet handle.
- Although AI may impact the demand for certain tasks, there is still a need for skilled DevOps engineers with hands-on experience.
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