Alexandru Nedelcu
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Alexandru Nedelcu
@alexn.org
1.2K followers 170 following 560 posts
Software developer, FP, Scala, Kotlin, Java / JVM, Haskell, Rust; contributor to https://alexn.org, https://monix.io, https://typelevel.org. 🌍 Bucharest, Romania https://alexn.org/about/
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Alexandru Nedelcu @alexn.org · 24d
I'm changing (again) how I use social-media. This account is now write-only, meant for publishing links to my website:

alexn.org

I will not be reading comments on my published links, either. Comment on my blog if you want to say hi and have opinions.
Alexandru Nedelcu
On programming and personal projects
alexn.org
5
alexn.org
Alexandru Nedelcu @alexn.org · 15h
Type-classes are generic interfaces. You're referring to OOP subtyping, which is powerful, and I can ask the same question in reverse (i.e., why do you need OOP, when you could …).

Type-classes work better w/ functions + ideology (note that I love OOP, too):

alexn.org/blog/2022/05...
OOP vs Type Classes: Ideology
This article explores the difference between OOP design, and parametric polymorphism with Type Classes, as both are possible in Scala.
alexn.org
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Reposted by Alexandru Nedelcu
sake92.bsky.social
Sakib @sake92.bsky.social · 1d
Sharaf 0.14.0 is out!

github.com/sake92/shara...

Added support for:
- SSE
- named tuples in query/form params
- union types in query/form params
Release 0.14.0 · sake92/sharaf
What's Changed SSE support in 0232827 support for named tuples in query params cfb6521 support for named tuples in form params 7b728fe support for union types in query params d01dd6b support for u...
github.com
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alexn.org
Alexandru Nedelcu @alexn.org · 1d
“Scala vs F#” 🔥🔥🔥

Which language leans more towards functional programming? In this binary choice, people have perceived F# to be that language, due to its ML roots, but I have a different perspective…

#FP #Scala #FSharp #JVM #dotNET

alexn.org/blog/2025/11...
Scala vs F#
Which language leans more towards functional programming? In this binary choice, people have perceived F# to be that language, due to its ML roots, but I have a different perspective…
alexn.org
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alexn.org
Alexandru Nedelcu @alexn.org · 2d
"Scala 3 / HOCON Parsing"

Alternative titles: How to use Circe for HOCON? How to work with multiple JSON codecs per data structure?

#Scala #Scala3 #Programming #Snippet
alexn.org/blog/2025/10...
Scala 3 / HOCON Parsing
How to parse HOCON in Scala 3? How to use Circe for HOCON? How to work with multiple JSON codecs per data structure?
alexn.org
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alexn.org
Alexandru Nedelcu @alexn.org · 6d
Oh wow, I just had the same opinion:

alexn.org/blog/2025/10...
'AI' Sucks the Joy Out of Programming
I’ve used spicy auto-complete, as well as agents running in my IDE, in my CLI, or on GitHub’s server-side. I’ve been experimenting enough with LLM/AI-driven programming to have an opinion on it. And i...
alexn.org
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alexn.org
Alexandru Nedelcu @alexn.org · 6d
'AI' Sucks the Joy Out of Programming

I’ve been experimenting enough with LLM/AI-driven programming to have an opinion on it. And it kind of sucks.

#AI #Opinion #Programming #ProgrammingRant

alexn.org/blog/2025/10...
'AI' Sucks the Joy Out of Programming
I’ve used spicy auto-complete, as well as agents running in my IDE, in my CLI, or on GitHub’s server-side. I’ve been experimenting enough with LLM/AI-driven programming to have an opinion on it. And i...
alexn.org
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alexn.org
Alexandru Nedelcu @alexn.org · 7d
“Scala 3 / No-Indent”

Scala 3 came with “significant indentation”. And I still dislike it, despite trying hard, so I'm switching back to braces.

#Languages #Programming #ProgrammingRant #Scala #Scala3

alexn.org/blog/2025/10...
Scala 3 / No Indent
Scala 3 came with “significant indentation”. And I still dislike it, despite trying hard, so I’m switching back to braces.
alexn.org
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alexn.org
Alexandru Nedelcu @alexn.org · 8d
"Scala 3 / Match Types"

Scala has a neat new feature, resembling TypeScript's "conditional types", but more powerful.

#Languages #Programming #Scala #Scala3 #TypeScript

alexn.org/blog/2025/10...
Scala 3 / Match Types
Scala has a neat new feature, resembling TypeScript’s “conditional types”, but more powerful.
alexn.org
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alexn.org
Alexandru Nedelcu @alexn.org · 11d
On how I'm using GitHub's Copilot in Agent mode for yak shaving, evolving my Jekyll-powered website for rendering mathematical formulas by SVG images, instead of heavy JavaScript:

alexn.org/blog/2025/10...

#AI #Blogging #Jekyll #SelfHosting
Update on Math Formulas via Copilot
On programming and personal projects
alexn.org
alexn.org
Alexandru Nedelcu @alexn.org · 18d
"Math Pill #2: Square Roots"

Simplifying radicals is strangely satisfying.

alexn.org/blog/2025/10...

#Math #Learning
Math Pill #2: Square Roots
Simplifying radicals is strangely satisfying.
alexn.org
alexn.org
Alexandru Nedelcu @alexn.org · 18d
“Math Pill #1: Sums”

#Learning #Math
alexn.org/blog/2025/10...
Math Pill #1: Sums
On programming and personal projects
alexn.org
alexn.org
Alexandru Nedelcu @alexn.org · 20d
“Outsourced Voices, Outsourced Minds”

We are not machines, or automatons. We were fooled, but we can fight back. Don't let algorithms control your thoughts and actions.

alexn.org/blog/2025/10...

(Note: I'm not replying to comments on Bluesky, comment on my blog instead)
Outsourced Voices, Outsourced Minds
We are not machines, or automatons. We were fooled, but we can fight back. Don’t let algorithms control your actions, don’t outsource your voice and your thoughts.
alexn.org
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alexn.org
Alexandru Nedelcu @alexn.org · 24d
I'm changing (again) how I use social-media. This account is now write-only, meant for publishing links to my website:

alexn.org

I will not be reading comments on my published links, either. Comment on my blog if you want to say hi and have opinions.
Alexandru Nedelcu
On programming and personal projects
alexn.org
5
alexn.org
Alexandru Nedelcu @alexn.org · 25d
Cancel culture is not the same thing as being banned from an online community for being rude. Internet has a long history of channels poisoned by rude people, starting from Usenet, communities dying by pacifism.

Community owners should just forgo COCs and ban whomever they want.
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alexn.org
Alexandru Nedelcu @alexn.org · 26d
Much of that thought leadership is obviously LLM-generated
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alexn.org
Alexandru Nedelcu @alexn.org · 26d
REST vs GraphQL
Meme showing a bell curve with GraphQL at the peak and REST at both extremes (low and high IQ), featuring cartoon characters representing each API type.
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alexn.org
Alexandru Nedelcu @alexn.org · 26d
fightchatcontrol.eu
Fight Chat Control - Protect Digital Privacy in the EU
Learn about the EU Chat Control proposal and contact your representatives to protect digital privacy and encryption.
fightchatcontrol.eu
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alexn.org
Alexandru Nedelcu @alexn.org · 26d
“The state” does not represent the people. It's better for individuals to make mistakes; when the state makes mistakes, it's a collective tragedy. The state is never shrinking, it only grows, converging on either fascism or communism.

Politicians understand E2EE, don't assume good intentions.
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alexn.org
Alexandru Nedelcu @alexn.org · 26d
(Taking “European” out of the sentence)

What if “leaders” do understand how E2EE works?

Consider this: the state is always expanding, it's never shrinking of its own accord. It is in the direct interest of “leaders” to have more power.
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alexn.org
Alexandru Nedelcu @alexn.org · 27d
We agree then … law enforcement can just target individuals' phones, and backdooring e2e chat apps is a terrible policy.
alexn.org
Alexandru Nedelcu @alexn.org · 27d
Sorry, it was a long thread, and I saw red right around when you started talking about banks 🙂
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Alexandru Nedelcu @alexn.org · 27d
On Chat Control 👇
alexn.org Alexandru Nedelcu @alexn.org · 27d
👋 I'm from Romania, and I was born in communism. Back then, the country was ruled by the secret police and people were paranoid for having their phones tapped or their newborns spying on them. Without privacy there is no democracy.

End-to-end enc makes _mass-surveillance_ impossible, as it should.
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alexn.org
Alexandru Nedelcu @alexn.org · 27d
Bank transactions? Yes, a big issue for privacy & democracy, as democracy can't be maintained w/o population having the means for civil disobedience.

“High-trust” doesn't happen in authoritarianism. This measure is authoritarian, like Covid-19 lockdowns & others, with fascism as consequence.
alexn.org
Alexandru Nedelcu @alexn.org · 27d
Steel-manning Chat Control doesn't work, as all arguments for it are emotional BS. Chat Control will expose regular citizens to being hacked by state actors or organized crime, it will incriminate regular family photos, it will censor political speech, like when FB censored “Napalm girl”.
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alexn.org
Alexandru Nedelcu @alexn.org · 27d
Note that law enforcement can just target individuals, like they often do. And also, bad actors can just find ways to communicate that aren't affected by Chat Control, because you can't ban mathematics, or bits on the Internet, or the ability of criminals to run whatever app they want.
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