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Daniel Fosco

@danielfos.co.bsky.social

software designer @github.com • big nerd • skateboarder • opinions my own etc • danielfos.co on the web • 🇧🇷🇳🇱

2,183 Followers  |  1,593 Following  |  718 Posts  |  Joined: 15.05.2023  |  2.0302

Latest posts by danielfos.co on Bluesky

They're also all over Brazil too!

05.08.2025 21:03 — 👍 1    🔁 0    💬 0    📌 0
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Building effective LLM-based applications with Semantic Kernel Learn to build production-ready applications with Large Language Models using C# and Semantic Kernel. A practical guide with proven patterns and real examples.

🧪 Think you can test LLM applications the same way you test regular code?

Here's the brutal truth: LLMs give you different responses every time you call them. You can't test for specific outputs like traditional software.

05.08.2025 18:35 — 👍 1    🔁 1    💬 1    📌 0
paint can pouring red paint over the globe with text saying "cover the earth" in all caps

paint can pouring red paint over the globe with text saying "cover the earth" in all caps

the sherwin-williams logo feels like some super villain shit

05.08.2025 16:41 — 👍 26    🔁 4    💬 4    📌 0

Yes! We need more harmless products with ominous branding. A cookie store with the tagline "conquer and crumble all"

05.08.2025 16:58 — 👍 2    🔁 0    💬 0    📌 0
Goose figurine holding a wrench

Goose figurine holding a wrench

Happy to report the goose is strong af and will hold your tools as well!

05.08.2025 16:40 — 👍 2    🔁 0    💬 0    📌 0

I wish a very happy “fuck you” to everyone who thought throwing trans people under the bus was going to stop these lunatics

Their goal has *always* been the eradication of the entire LGBTQ+ community, and they’re not gonna stop at Obergefell either

This is why we fight for *everyone*

31.07.2025 18:16 — 👍 10081    🔁 3985    💬 140    📌 79

This is one of the best pieces I've read about AI. It covers many aspects of LLMs and why they're problematic. I can't recommend reading if enough.

If you're very well read in the area of AI criticism this may be all territory you're familiar with, but I expect a lot of folks can learn from it.

04.08.2025 17:42 — 👍 30    🔁 16    💬 2    📌 0
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Linguagem e decolonização.

03.08.2025 21:09 — 👍 93    🔁 26    💬 4    📌 6

Oh this is super interesting! I'm a fan of Liquid but got too annoyed with its limitations in the past.

Astro is great, but I don't always want to write pure JS components for a static site.

03.08.2025 16:47 — 👍 0    🔁 0    💬 1    📌 0
🌬 Vento

I’ve really been enjoying using Vento which @11ty.dev can support.

vento.js.org

03.08.2025 12:29 — 👍 13    🔁 2    💬 3    📌 0

I think if you mute the term nytimes.com it will do that

30.07.2025 13:53 — 👍 3    🔁 0    💬 0    📌 0
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I made a typeface, it's called Flexflex 🔠

I've been working on this project on-and-off for many months. Very happy to finally release it!

Flexflex is a typeface that responds to spatial requirements rather than imposing them.

Website: ronikaufman.github.io/flexflex

29.07.2025 12:30 — 👍 344    🔁 55    💬 14    📌 8

My personal experience with online safety was my school installing strict internet controls to Protect The Kids™, so I joined a hacking forum to learn bypasses. The users also taught me how to import drugs via the dark web. Then I got arrested by the FBI for computer hacking. It was all very safe.

28.07.2025 21:26 — 👍 571    🔁 112    💬 17    📌 4
A black cat asleep on its side in a parking lot. It is lying on a drawing indicating a bicycle space, with its legs outstretched so it looks like it's riding the bike

A black cat asleep on its side in a parking lot. It is lying on a drawing indicating a bicycle space, with its legs outstretched so it looks like it's riding the bike

Daily cat fitness goals achieved:
1. Have a nice nap in the sunshine
2. Inconvenience the humans while looking cute

26.07.2025 07:35 — 👍 431    🔁 95    💬 1    📌 0

*Tech friends*! If any of you are looking for new roles, and we know each other, a person I know is hiring:
• a senior DevRel that is US-based
• a mobile DX Engineer that is EU-based

DM ME (here, there, anywhere) and I'd be happy to put you in touch

24.07.2025 20:03 — 👍 5    🔁 2    💬 1    📌 0
a digital drawing of a young character with a turquoise bow on her head. She possesses canine-like features and wears a white outfit with yellow gloves. To the right of her is text that reads "Fuck it, let's make a website!"

a digital drawing of a young character with a turquoise bow on her head. She possesses canine-like features and wears a white outfit with yellow gloves. To the right of her is text that reads "Fuck it, let's make a website!"

I've slapped together approximately 173 pages of material that aims to teach programming a personal website with HTML and CSS to artists, animators, writers, music producers, etc.

F*ck It, Let's Make a Website Part 1 is now live ✨
Go here to read: bit.ly/filmawPartOne
More info below 👇

20.06.2025 07:01 — 👍 11793    🔁 5484    💬 265    📌 120
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New on constraint.systems:

Ghost - capture the difference between two moments in time.

Try it at ghost.constraint.systems

23.07.2025 19:25 — 👍 12    🔁 3    💬 1    📌 0

Y'all forgot the proplusbiotics

23.07.2025 13:18 — 👍 2    🔁 0    💬 0    📌 0

I've noticed that the inline copilot chat really doesn't work for larger or complex changes -- basically I only use it for a small change in the few specific lines I've selected.

23.07.2025 13:16 — 👍 0    🔁 0    💬 0    📌 0

while the current official number is hotly debated, there are actually far more tags in HTML than the ~150 commonly cited! that number merely represents the ones we’ve discovered and domesticated — there are potentially thousands more in the creeping unexplored corners of the deep web & dark net

22.07.2025 22:51 — 👍 137    🔁 22    💬 7    📌 3
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"..and I asked him what it would cost to build it today. I will never forget his answer… 'We can’t, we don’t know how to do it.'"

23.07.2025 11:23 — 👍 4    🔁 2    💬 0    📌 0

Yes! I think writing and understanding Regex and CSS make use of the same brain areas, both being selector-driven languages.

Also loved doing both from early in my career, even when I was really far from "actual programming".

23.07.2025 11:43 — 👍 2    🔁 0    💬 1    📌 0

This much research about dashes and hyphens... Katie are you an AI bot? 🤖

23.07.2025 10:59 — 👍 4    🔁 0    💬 1    📌 0

Ozzy Osbourne visited my magic shop. He said he'd like to buy some stink bombs. How many? All of them. I had to go through drawers finding every last one. He bought 900 of them. To sign the credit card slip I handed him a shock pen, which he thought was hilarious and bought that too. RIP

22.07.2025 18:29 — 👍 16544    🔁 3251    💬 91    📌 97

Corporate Gossip podcast is great if you want to hear business stories about (shitty) people told in an earnest and funny way.

22.07.2025 10:55 — 👍 1    🔁 0    💬 1    📌 0

wow calm down there they're not rocket scientists

21.07.2025 21:56 — 👍 1    🔁 0    💬 0    📌 0
A screenshot of Firefox Nightly, with the Codepen https://codepen.io/keithamus/pen/wBaZVaX open. The page showing 6 heading levels, showing the CSS, HTML and the rendered page. Each heading is styled differently using the provided CSS selectors, `:heading` (which styles all headers), `:heading(-2n+3)` (styles h1 and h3 elements), `:heading(5, 6)` (styles the h5 and h6 elements). Another Firefox Nightly window is open, showing the `layout.css.heading-selector.enabled` flag is set to `true`, making the rendered page styled using the new selectors.

A screenshot of Firefox Nightly, with the Codepen https://codepen.io/keithamus/pen/wBaZVaX open. The page showing 6 heading levels, showing the CSS, HTML and the rendered page. Each heading is styled differently using the provided CSS selectors, `:heading` (which styles all headers), `:heading(-2n+3)` (styles h1 and h3 elements), `:heading(5, 6)` (styles the h5 and h6 elements). Another Firefox Nightly window is open, showing the `layout.css.heading-selector.enabled` flag is set to `true`, making the rendered page styled using the new selectors.

Hot off the presses! Firefox Nightly (www.mozilla.org/en-GB/firefo...) adds the new :heading pseudo! Easily style all headings, or use nth-child-like AnB syntax to select a range of headings! Needs `layout.css.heading-selector.enabled` flag enabled. Try it out and let me know your thoughts.

01.07.2025 15:13 — 👍 101    🔁 29    💬 3    📌 3
A photo of a TV where a woman dressed as a ghost for the Eras Tour is interviewed by local news. The caption reads “Woman hides identity because she called in sick to work.”

A photo of a TV where a woman dressed as a ghost for the Eras Tour is interviewed by local news. The caption reads “Woman hides identity because she called in sick to work.”

Unlike CEOs and other executives, individual contributors understand concert OPSEC

17.07.2025 17:29 — 👍 15314    🔁 2658    💬 104    📌 130

which is very different from vibe-coding your saas app all the way to production 😅

17.07.2025 17:39 — 👍 1    🔁 0    💬 1    📌 0

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