Jan Vladimir Mostert
@polyglotamus.io
idea incubator
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chaotic random posts about mostly tech, startups, #Kotlin, #Rust, #TypeScript, #PostgreSQL, #Linux, or anything else interesting
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will like your cat pictures
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chaotic random posts about mostly tech, startups, #Kotlin, #Rust, #TypeScript, #PostgreSQL, #Linux, or anything else interesting
-
will like your cat pictures
Reposted by Jan Vladimir Mostert
I do love me some Goth Lasagna 😋🖤
September 17, 2026 at 6:06 AM
I do love me some Goth Lasagna 😋🖤
skibidi toilet is just modern dadaism
August 17, 2026 at 5:38 PM
skibidi toilet is just modern dadaism
null as NodeFilter? --> Unchecked cast
null.unsafeCast<NodeFilter?> --> 👍
Usually any problem in KotlinJs can be fixed with asDynamic ... looks under the hood of unsafeCast ...
inline fun <T> Any?.unsafeCast(): T = this.asDynamic()
😂
null.unsafeCast<NodeFilter?> --> 👍
Usually any problem in KotlinJs can be fixed with asDynamic ... looks under the hood of unsafeCast ...
inline fun <T> Any?.unsafeCast(): T = this.asDynamic()
😂
August 15, 2026 at 2:36 PM
null as NodeFilter? --> Unchecked cast
null.unsafeCast<NodeFilter?> --> 👍
Usually any problem in KotlinJs can be fixed with asDynamic ... looks under the hood of unsafeCast ...
inline fun <T> Any?.unsafeCast(): T = this.asDynamic()
😂
null.unsafeCast<NodeFilter?> --> 👍
Usually any problem in KotlinJs can be fixed with asDynamic ... looks under the hood of unsafeCast ...
inline fun <T> Any?.unsafeCast(): T = this.asDynamic()
😂
Found an old email that somehow got snoozed till the year 3000
May 3, 2026 at 10:56 AM
Found an old email that somehow got snoozed till the year 3000
Reposted by Jan Vladimir Mostert
📢 Kotlin 2.3.21 is here! This release brings performance improvements and bug fixes.
Changelog: ➡️ github.com/JetBrains/ko...
Changelog: ➡️ github.com/JetBrains/ko...
April 23, 2026 at 12:13 PM
📢 Kotlin 2.3.21 is here! This release brings performance improvements and bug fixes.
Changelog: ➡️ github.com/JetBrains/ko...
Changelog: ➡️ github.com/JetBrains/ko...
I never understood why this is a feature that's being marketed?
Does anyone actually use their laptop this way?
Does anyone actually use their laptop this way?
March 29, 2026 at 11:26 AM
I never understood why this is a feature that's being marketed?
Does anyone actually use their laptop this way?
Does anyone actually use their laptop this way?
when I used to do PC repairs as a student, every PC had a different BIOS key so I had to do something similar + try the delete key if that didn't work.
March 21, 2026 at 4:13 PM
when I used to do PC repairs as a student, every PC had a different BIOS key so I had to do something similar + try the delete key if that didn't work.
Reposted by Jan Vladimir Mostert
Did you see what’s in Safari Technology Preview 238?!
* Customizable
* Customizable
Release Notes for Safari Technology Preview 238
Safari Technology Preview Release 238 is now available for download for macOS Tahoe and macOS Sequoia.
webkit.org
February 27, 2026 at 4:26 PM
Reposted by Jan Vladimir Mostert
1Password not mincing words here:
"If you are experimenting with OpenClaw, do not do it on a company device. Full stop."
"If you have already run OpenClaw on a work device, treat it as a potential incident and engage your security team immediately."
1password.com/blog/from-ma...
"If you are experimenting with OpenClaw, do not do it on a company device. Full stop."
"If you have already run OpenClaw on a work device, treat it as a potential incident and engage your security team immediately."
1password.com/blog/from-ma...
From magic to malware: How OpenClaw's agent skills become an attack surface | 1Password
The same capabilities that make OpenClaw a groundbreaking tool also make it an urgent security risk. This blog contains confirmed examples of agent skills being used as malware vectors, and advice on ...
1password.com
February 3, 2026 at 1:12 PM
1Password not mincing words here:
"If you are experimenting with OpenClaw, do not do it on a company device. Full stop."
"If you have already run OpenClaw on a work device, treat it as a potential incident and engage your security team immediately."
1password.com/blog/from-ma...
"If you are experimenting with OpenClaw, do not do it on a company device. Full stop."
"If you have already run OpenClaw on a work device, treat it as a potential incident and engage your security team immediately."
1password.com/blog/from-ma...
Reposted by Jan Vladimir Mostert
📢 New KEEP published 🎉
We now have a proposal for sharing internals between modules ready for your review and comments.
(Spoiler: The KEEP includes a very important explanation of why modules just can't be friends.)
We now have a proposal for sharing internals between modules ready for your review and comments.
(Spoiler: The KEEP includes a very important explanation of why modules just can't be friends.)
KEEP/proposals/KEEP-0451-shared-internals.md at main · Kotlin/KEEP
Kotlin Evolution and Enhancement Process. Contribute to Kotlin/KEEP development by creating an account on GitHub.
github.com
January 30, 2026 at 10:50 AM
📢 New KEEP published 🎉
We now have a proposal for sharing internals between modules ready for your review and comments.
(Spoiler: The KEEP includes a very important explanation of why modules just can't be friends.)
We now have a proposal for sharing internals between modules ready for your review and comments.
(Spoiler: The KEEP includes a very important explanation of why modules just can't be friends.)
I thought the whole RAM prices thing was a meme; the same 128GB of RAM that cost me less than €500 now sells for over €2000 a year later 😱
Good thing I don't need more RAM!
Good thing I don't need more RAM!
January 17, 2026 at 11:47 AM
I thought the whole RAM prices thing was a meme; the same 128GB of RAM that cost me less than €500 now sells for over €2000 a year later 😱
Good thing I don't need more RAM!
Good thing I don't need more RAM!
I've translated a JavaScript library to KotlinJs so I can get rid of the external dependency on npm.
The project has an ISC + MIT license: is it good enough to have the licenses copied and pasted into the .kt files and reference the original project in the README?
This is for a non-OS project
The project has an ISC + MIT license: is it good enough to have the licenses copied and pasted into the .kt files and reference the original project in the README?
This is for a non-OS project
January 4, 2026 at 9:25 AM
I've translated a JavaScript library to KotlinJs so I can get rid of the external dependency on npm.
The project has an ISC + MIT license: is it good enough to have the licenses copied and pasted into the .kt files and reference the original project in the README?
This is for a non-OS project
The project has an ISC + MIT license: is it good enough to have the licenses copied and pasted into the .kt files and reference the original project in the README?
This is for a non-OS project
It's been snowing for two days and several more days of snow predicted. Usually it snows for a day and then it just melts away.
This was Saturday morning, got my first cycling on snow / ice experience.
This was Saturday morning, got my first cycling on snow / ice experience.
January 4, 2026 at 9:07 AM
It's been snowing for two days and several more days of snow predicted. Usually it snows for a day and then it just melts away.
This was Saturday morning, got my first cycling on snow / ice experience.
This was Saturday morning, got my first cycling on snow / ice experience.
Building a Kotlin compiler plugin is magic when it works, but getting it there is such a tedious process.
January 3, 2026 at 5:41 PM
Building a Kotlin compiler plugin is magic when it works, but getting it there is such a tedious process.
Reposted by Jan Vladimir Mostert
Kotlin 2.3.0 is out! My faves (no order) 😅
- Unused value checker
- Improved Context Sensitive Resolution
- Java 25 Bytecode
- JS suspend function export
- Better Swift Interop
- Explicit backing fields
- New Kotlin Uuid APIs
and there is much more! Check it out: blog.jetbrains.com/kotlin/2025/...
- Unused value checker
- Improved Context Sensitive Resolution
- Java 25 Bytecode
- JS suspend function export
- Better Swift Interop
- Explicit backing fields
- New Kotlin Uuid APIs
and there is much more! Check it out: blog.jetbrains.com/kotlin/2025/...
Kotlin 2.3.0 Released | The Kotlin Blog
The Kotlin 2.3.0 release is out! This version includes new language features, stable ones, and other features now enabled by default. This release also brings tooling updates, performance improvements
blog.jetbrains.com
December 17, 2025 at 9:57 AM
Kotlin 2.3.0 is out! My faves (no order) 😅
- Unused value checker
- Improved Context Sensitive Resolution
- Java 25 Bytecode
- JS suspend function export
- Better Swift Interop
- Explicit backing fields
- New Kotlin Uuid APIs
and there is much more! Check it out: blog.jetbrains.com/kotlin/2025/...
- Unused value checker
- Improved Context Sensitive Resolution
- Java 25 Bytecode
- JS suspend function export
- Better Swift Interop
- Explicit backing fields
- New Kotlin Uuid APIs
and there is much more! Check it out: blog.jetbrains.com/kotlin/2025/...
Reposted by Jan Vladimir Mostert
We're back to the good old comments of the 90's except the AI is writting them this time.
December 18, 2025 at 6:04 PM
We're back to the good old comments of the 90's except the AI is writting them this time.
Happy to see a new Linux phone!
December 8, 2025 at 5:33 PM
Happy to see a new Linux phone!
Reposted by Jan Vladimir Mostert
![Comic. PERSON 1 with white hat: How tall are you? PERSON 2: 5ft 24cm [caption] When switching to metric, make the process easier by doing it in steps.](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:cz73r7iyiqn26upot4jtjdhk/bafkreifptvo6h6kdpf75j3i443ospzumiii7a3pblah2urjrawmyymh3ga)
November 6, 2025 at 11:33 PM
Reposted by Jan Vladimir Mostert
engineer spotted in the wild 😭
October 29, 2025 at 6:32 AM
engineer spotted in the wild 😭
Reposted by Jan Vladimir Mostert
Madrid ↔️ Lisbon in just 3 hours – we're on board 🚄
Today, we adopted a plan to complete the Madrid–Lisbon high-speed rail connection by 2034.
This is a key step in fully integrating Portugal and Spain into the European high-speed rail network.
More → link.europa.eu/kqjJHM
Today, we adopted a plan to complete the Madrid–Lisbon high-speed rail connection by 2034.
This is a key step in fully integrating Portugal and Spain into the European high-speed rail network.
More → link.europa.eu/kqjJHM
October 30, 2025 at 4:16 PM
Madrid ↔️ Lisbon in just 3 hours – we're on board 🚄
Today, we adopted a plan to complete the Madrid–Lisbon high-speed rail connection by 2034.
This is a key step in fully integrating Portugal and Spain into the European high-speed rail network.
More → link.europa.eu/kqjJHM
Today, we adopted a plan to complete the Madrid–Lisbon high-speed rail connection by 2034.
This is a key step in fully integrating Portugal and Spain into the European high-speed rail network.
More → link.europa.eu/kqjJHM
Reposted by Jan Vladimir Mostert
So, we now have:
- BigQuery
- ClickHouse
- Databricks
- DuckDB
- Exasol
- H2
- Snowflake
- Teradata (the inventor, I think?)
And now also:
- Oracle!
I'm assuming MySQL will follow suit, soon? PostgreSQL, when!?
- BigQuery
- ClickHouse
- Databricks
- DuckDB
- Exasol
- H2
- Snowflake
- Teradata (the inventor, I think?)
And now also:
- Oracle!
I'm assuming MySQL will follow suit, soon? PostgreSQL, when!?
Apply the Oct 2025 Release Update and Oracle Database 23ai becomes Oracle AI Database 26ai
This adds the QUALIFY clause
QUALIFY filters window functions after grouping
Like the HAVING clause does for aggregate functions
SELECT ... FROM ...
QUALIFY fn OVER ( ... ) > ...
This adds the QUALIFY clause
QUALIFY filters window functions after grouping
Like the HAVING clause does for aggregate functions
SELECT ... FROM ...
QUALIFY fn OVER ( ... ) > ...
October 20, 2025 at 12:13 PM
So, we now have:
- BigQuery
- ClickHouse
- Databricks
- DuckDB
- Exasol
- H2
- Snowflake
- Teradata (the inventor, I think?)
And now also:
- Oracle!
I'm assuming MySQL will follow suit, soon? PostgreSQL, when!?
- BigQuery
- ClickHouse
- Databricks
- DuckDB
- Exasol
- H2
- Snowflake
- Teradata (the inventor, I think?)
And now also:
- Oracle!
I'm assuming MySQL will follow suit, soon? PostgreSQL, when!?
Reposted by Jan Vladimir Mostert
I think one of the saddest things about being a millennial is remembering a time when technology was advancing in a way that made life better and easier and more exciting instead of actively, intentionally worse
July 9, 2025 at 7:18 PM
I think one of the saddest things about being a millennial is remembering a time when technology was advancing in a way that made life better and easier and more exciting instead of actively, intentionally worse
Poisoning attacks require a near-constant number of documents regardless of model size. In our experimental setup with models up to 13B parameters, just 250 malicious documents were sufficient to successfully backdoor models.
www.anthropic.com/research/sma...
www.anthropic.com/research/sma...
A small number of samples can poison LLMs of any size
Anthropic research on data-poisoning attacks in large language models
www.anthropic.com
October 20, 2025 at 9:55 AM
Poisoning attacks require a near-constant number of documents regardless of model size. In our experimental setup with models up to 13B parameters, just 250 malicious documents were sufficient to successfully backdoor models.
www.anthropic.com/research/sma...
www.anthropic.com/research/sma...