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PyCon Finland 2025 Schedule Published! ๐ŸŽ‰
Join us on Friday, October 17th in Jyvรคskylรค for a full day of Python talks and networking.

Featured talks include:
- Keynote: "Muuttolintujen Kevรคt - Automatic Bird Sound Classifier" by Patrik Lauha
- "Building RAG AI Applications with MariaDB Vector and Python" by Robert Silรฉn
- "Using Python with Satellites, Lessons from a Staff Engineer" by Jeremy Mayeres

2025.ploneconf.org/schedule/py

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React - useCallback & useMemo Misuse

Shahar Amir @shaharamir@hackers.pub

The `useCallback` and `useMemo` hooks in React are designed to optimize performance by memoizing functions and values, but using them indiscriminately can lead to unnecessary overhead. These hooks are beneficial when dealing with expensive calculations or when passing stable references to deeply nested child components. However, for simple operations like basic arithmetic or simple function declarations, the memoization provided by these hooks adds complexity without any performance gain. Overusing `useMemo` and `useCallback` introduces extra CPU cycles and can confuse developers, making the code harder to maintain. It's more efficient to apply these hooks selectively, focusing only on the parts of your application where they provide a tangible benefit, ensuring that React remains fast and your code stays clean.

Read more โ†’
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Just moved over from mastodon.design, so it's time for another !

I'm Toni ๐Ÿ‘‹

Iโ€™m a software , though Iโ€™m spending more and more time writing code, mostly in and

When I'm not heads down at work, you'll catch me , eating my weight in oranges, walking with my dog Xenon, or just getting lost in a new , , or .

Iโ€™m also a passionate collector, fan and I play occasionally.

More๐ŸŠ โ†’ toni.li/about

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Since I've moved to a new instance - one I'm running myself - I though I might re-introduce myself.

I'm Jeff Markel (see profile for pronunciation) - he/him. I'm kinda old, kinda not - born on the cusp of Baby Boom I and Baby Boom 2, aka Generation Jones (1955).

I can schmooze, but am basically very shy - f2f, anyway - and very introverted. More than a few hours of f2f interaction are exhausting.

I had one sibling - a sister - who died of pancreatic cancer in 1997, at 45. I lost my dad to bladder cancer in 1991 (age 67), and my mom to breast cancer in 2006 (age 80). So the big-C is ever-looming; my odds aren't so good. But I've lived longer than my sister and my father. Hopefully the string will continue.

My wife and I have been married to each other since 1982. We have 3 "children" (in quotes only because they're long-past childhood), and 4 grandchildren. Two are in NYC and one is in LA. The oldest of the grands is 15 and in full-fledged teenager mode.

I'm Jewish, but also an atheist - if that makes sense. The ethnicity does mean a lot to me. I have always felt a sense of 'other'ness and, although I know that I benefit from white privilege, I no longer really think of myself as "white" because the people for whom that matters most do not - and that's perfectly fine with me.

I get obsessed with things. I bake sourdough. I make cocktails. I walk long distances. I develop websites - using Drupal mostly, though I'm now learning React and a few other Javascript frameworks like Sveltekit and Astro - and of course those all have adjacent, and necessary, technologies that I also want to learn. As I used to say in my Twitter profile, when I was still there, I try to learn something new every day.

I've been a software person since the late 1970's. I started out on mainframes - but that's become a distinction without a difference. I've written code in many languages, from Algol to YAML (I tried to think of one starting with Z but Zend is all I could come up with, but that's a company, not a language ๐Ÿคทโ€โ™‚๏ธ). Still working, but I do plan to "retire" in the next 18 months or so - in quotes because I will certainly need to do something after that besides sleeping in.

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์ฒญ๊ฐœ๊ตฌ๋ฆฌ ์Šคํƒ ์ฐฌ๊ฐ€

ๆดช ๆฐ‘ๆ†™ (Hong Minhee) @hongminhee@hackers.pub

์ด ๊ธ€์€ ์ €์ž๊ฐ€ ๊ธฐ์ˆ  ์Šคํƒ์„ ์„ ํƒํ•  ๋•Œ ์ฃผ๋ฅ˜๋ฅผ ๋”ฐ๋ฅด์ง€ ์•Š๊ณ  ๋Œ€์•ˆ์ ์ธ ๊ธฐ์ˆ ์„ ์„ ํƒํ•˜๋Š” ๊ฒฝํ–ฅ, ์ฆ‰ "์ฒญ๊ฐœ๊ตฌ๋ฆฌ ์Šคํƒ"์„ ์ถ”๊ตฌํ•˜๋Š” ๊ฒฝํ—˜์„ ๊ณต์œ ํ•ฉ๋‹ˆ๋‹ค. ์ฒญ๊ฐœ๊ตฌ๋ฆฌ ์Šคํƒ์€ ์‚ฌ์šฉ์ž๊ฐ€ ์ ์–ด ๋ฌธ์ œ ํ•ด๊ฒฐ์— ์–ด๋ ค์›€์ด ์žˆ์„ ์ˆ˜ ์žˆ์ง€๋งŒ, ๊ธฐ์ˆ ์— ๋Œ€ํ•œ ๊นŠ์ด ์žˆ๋Š” ์ดํ•ด์™€ ์˜คํ”ˆ ์†Œ์Šค ๊ธฐ์—ฌ ๊ธฐํšŒ๋ฅผ ์ œ๊ณตํ•ฉ๋‹ˆ๋‹ค. ๋˜ํ•œ, ํ›„๋ฐœ์ฃผ์ž๋กœ์„œ ๋Œ€์•ˆ์ ์ธ ์„ค๊ณ„๋ฅผ ํ†ตํ•ด ์ •์„ ์Šคํƒ๋ณด๋‹ค ๋‚˜์€ ์ดํ•ด๋ฅผ ์ œ๊ณตํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. ์—ฌ๋Ÿฌ ๋ถ€ํ’ˆ์„ ์ง์ ‘ ์กฐ๋ฆฝํ•˜๋Š” ๊ณผ์ •์€ ๋ฒˆ๊ฑฐ๋กญ์ง€๋งŒ ๊ฐ ๊ธฐ์ˆ ์— ๋Œ€ํ•œ ๊นŠ์€ ์ดํ•ด๋ฅผ ์–ป์„ ์ˆ˜ ์žˆ๊ฒŒ ํ•ฉ๋‹ˆ๋‹ค. ์ €์ž๋Š” ์˜ค๋Š˜์˜ ์ •์„ ์Šคํƒ๋„ ๊ณผ๊ฑฐ์—๋Š” ์ฒญ๊ฐœ๊ตฌ๋ฆฌ ์Šคํƒ์ด์—ˆ์„ ์ˆ˜ ์žˆ์Œ์„ ์ง€์ ํ•˜๋ฉฐ, LLM ์‹œ๋Œ€์—๋„ ์ฒญ๊ฐœ๊ตฌ๋ฆฌ ์Šคํƒ์ด ์ฃผ๋Š” ๋ฐฐ์›€์˜ ๊ธฐํšŒ๋Š” ์—ฌ์ „ํ•  ๊ฒƒ์ด๋ผ๊ณ  ์ฃผ์žฅํ•ฉ๋‹ˆ๋‹ค. Stack Overflow์— ๋‹ต์ด ์—†๋Š” ๊ธธ์„ ๊ฑธ์œผ๋ฉฐ ์–ป๋Š” ๊นจ๋‹ฌ์Œ์€ ์˜จ์ „ํžˆ ์ž์‹ ์˜ ๊ฒƒ์ด ๋  ๊ฒƒ์ด๋ผ๋Š” ๋ฉ”์‹œ์ง€๋ฅผ ์ „๋‹ฌํ•˜๋ฉฐ, ๋…์ž๋“ค์—๊ฒŒ๋„ ์ฃผ์ฒด์ ์ธ ๊ธฐ์ˆ  ์„ ํƒ๊ณผ ๋„์ „์„ ๊ถŒ์žฅํ•ฉ๋‹ˆ๋‹ค.

Read more โ†’
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Welcome to the fediverse, folks!

Iโ€™m a professional software dev and hobbyist programming nerd. I like finding ways to accomplish more with less effort.

Paradoxically, this means I focus on both using high-abstraction frameworks (, , , ) and old development methods (, , ). I post/write/livestream/speak/teach about all this stuff.

I live outside Atlanta, GA and work at @testdouble

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A late . Iโ€™m a west coast Canadian enjoying life w/ my badass wife @brittBadass Britt :mastodon_lgbt:

โ€ข is my jam
โ€ข , addict
โ€ข , , & flash creative
โ€ข , , ,
โ€ข w/ a M.A in Spiritual
โ€ข & lean

I love and take
, , , , , , and many more.

I will post a lot of our

photo collage of a maine coon cat, looking at camera, upside down on couch, curling up cozy and a profile shot
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๐ŸŒŸ Hello, Fostodon Community! ๐ŸŒŸ

Iโ€™m Muhammad, a 14-year-old programmer, excited to share my project: FOSS-UI! ๐ŸŽ‰ Itโ€™s a free UI library for React, built on Radix UI, aimed at creating beautiful and accessible interfaces without proprietary constraints.

๐Ÿ”— **Check it out here:** [FOSS-UI Demo](bafybeihpnjgdjrc7eujhsj4rvfypy)
๐Ÿ“‚ **Explore the code on Codeberg:** [FOSS-UI Repository](codeberg.org/MukiOpenSource/FO)
I'd love to hear feedback!

A screenshot of the home page of my react ui library
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๐Ÿ‘‹๐Ÿ’ป Hey !
๐Ÿ†“โœจ Libre React UI Alert!

FOSS-UI: A freedom-respecting UI library (Radix UI-based).

๐Ÿ”ง Features:
โœ… Navbars/Sidebars
โœ… Sign-Up Forms
โœ… Copy-paste-ready
โœ… 100% Libre

๐ŸŒ Demo/Docs (decentralized):
bafybeihpnjgdjrc7eujhsj4rvfypy

๐Ÿ“‚ Repo: codeberg.org/MukiOpenSource/FO

Join the libre movement! ๐ŸŒ
Use, study, modify, share! - Becouse software should empower everyone!

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๐ŸŒŸ Morninโ€™, devs! Tired of endless searches for the perfect React UI component? LibreUI has you coveredโ€”copy, paste, done! โœจ Stunning, ready-to-use components. Find, copy, ship! ๐Ÿš€ Stop searching. Start building.
bafybeiamilcqrhqrnxowugeuxkhdj
Every component in this website is released under the Mozzilla Public License, version 2. Any modification of the component files must be released under the same license

A screenshot featuring the Components page of LibreUI.
Screenshot of LibreUI's main page
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As a beginner of FE dev
I wanted to follow react/vue.js core devs.

React core team : react.dev/community/team
Vue core team : vuejs.org/about/team.html

But, fedi. accounts are rarely exists.
Although it exists, not so active compare with other foss dev's account.
Most of FE developers seem active in bsky or X.

But, I want to be connected with frontend developers in fediverse.
Is there anyone who want to be connected?
Or Is there any recommendation i don't know?

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๐ŸŒ— 1993ๅนด็š„่’ธๆฑฝ็ซ่ปŠๆžๅžฎไบ†ๆˆ‘็š„ๆธฌ่ฉฆ
โžค ไธ€ๅ ด็”ฑๅ‘ฝๅ่ก็ชๅผ•็™ผ็š„ๅฅ‡็•ฐๆธฌ่ฉฆๅดฉๆฝฐไบ‹ไปถ
โœค blog.cloudflare.com/yarn-test-
ไธ€ไฝ้–‹็™ผ่€…ๅœจๅ˜—่ฉฆๅŸท่กŒ React ๅฐˆๆกˆ็š„ๅ–ฎๅ…ƒๆธฌ่ฉฆๆ™‚๏ผŒ้ญ้‡ไบ†ไธ€ๅ€‹ๅฅ‡ๆ€ช็š„้Œฏ่ชค๏ผšๆธฌ่ฉฆๆœƒๅœจ็ฒพๆบ–็š„ 27 ็ง’ๅพŒๅดฉๆฝฐใ€‚็ถ“้Ž้•ทๆ™‚้–“็š„ๆŽ’ๆŸฅ๏ผŒๅŒ…ๆ‹ฌๅˆ†ๆž็ณป็ตฑ่ฟฝ่นค่จ˜้Œ„๏ผŒๆœ€็ต‚็™ผ็พๅ•้กŒ็š„ๆ นๆบไธฆ้ž็จ‹ๅผ็ขผ้Œฏ่ชค๏ผŒ่€Œๆ˜ฏๅ› ็‚บ็ณป็ตฑไธญๅฎ‰่ฃไบ†ไธ€ๅ€‹ๅ็‚บ `sl` ็š„ 1993 ๅนด็š„ๆƒกๆž็จ‹ๅผ๏ผŒ่ˆ‡ Jest ๅ˜—่ฉฆๅ‘ผๅซ็š„ๅฆไธ€ๅ€‹ `sl` ๅ‘ฝไปค๏ผˆไธ€ๅ€‹็‰ˆๆœฌๆŽงๅˆถๅทฅๅ…ท๏ผ‰็”ข็”Ÿไบ†ๅ‘ฝๅ่ก็ชใ€‚
+ ็œŸๆ˜ฏๅคชๆœ‰่ถฃไบ†๏ผ่ชฐ่ƒฝๆƒณๅˆฐไธ€ๅ€‹ 1993 ๅนด็š„็จ‹ๅผๆœƒๆžๅžฎ็พไปฃ็š„ JavaScript ๆธฌ่ฉฆ๏ผŸ้€™ไนŸๆ้†’ๆˆ‘ๅ€‘๏ผŒ้–‹็™ผ็’ฐๅขƒ็š„ๆธ…ๆฝ”ๅบฆๅพˆ้‡่ฆใ€‚
+ ้€™ๅ€‹ๆ•…ไบ‹ๅคช็ฒพๅฝฉไบ†๏ผŒ่ฎ“ไบบๅฐ่ฑกๆทฑๅˆป๏ผ็œ‹่‘—ไป–ไธ€ๆญฅๆญฅๆŽ’้™ค้Œฏ่ชค๏ผŒๆœ€ๅพŒ็™ผ็พๅ•้กŒ็ซŸ็„ถๅ‡บๅœจไธ€ๅ€‹ๆƒกๆž็จ‹ๅผไธŠ๏ผŒ็œŸๆ˜ฏ่ฎ“ไบบๅ•ผ็ฌ‘็š†้žใ€‚

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Last night, I started creating a screenshot generator for , similar to Re: Toot on iOS. It's still in the alpha stage and needs some polish.

GitHub: github.com/Kvanrooyen/masto-img
Demo: masto-img.governorkeagan.com/

You can input a Mastodon post URL, and it will generate a downloadable image of the toot. As I'm not a or designer, it may not be the prettiest (for now).

Also, I'm open to name suggestions for the project!

Screenshot of Mast Img. A tool that will generate a downloadable image from a mastodon URL.

This screenshot shows a toot from @everydoor talking about the release of Version 5.1
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Hello, fediverse! I'm a father, elder millennial, and software developer primarily in the ecosystem. Though I do enjoy working with , , and other and/or frameworks. I came here like many others as part of the . l'm looking for professional networking, learning, and socialization.

I love , , , , , , and .

I want to move to one day!

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Hi everyone, I am now looking for full-time work! If you have a remote Software Engineer position available and work with web tech ( / / / / , etc), (or / ), , or / then please reach out! I love building tools to solve problems and delight users.

For examples of my previous work, links to my projects, and my resume, please see my website: jakehamilton.dev

Boosts very much appreciated!

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Just decided to revamp my introduction.

I am a full stack web dev ๐Ÿ” working remotely from the ๐Ÿ”

A father of 2 ๐Ÿ‘จโ€๐Ÿ‘ฉโ€๐Ÿ‘งโ€๐Ÿ‘ฆ love different types of music ๐ŸŽต, movies & ๐Ÿ“บ.

Work with for day job.

Interested in all sorts of web technologies & development.

Interested in making websites for anyone who needs one.

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