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Bootvis

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Mail: bobjansen@hey.com

Blog: bobjansen.net

Moderator at http://quant.stackexchange.com

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http://120w.nl (Dutch, short stories (120 words))

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github.com 4mo ago

VolaDynamics/vtz: A C++ timezone library offering performance for date and time

Bootvis
3pts0
bobjansen.github.io 4mo ago

Ibex – Typed DataFrame DSL

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1pts0
bobjansen.net 5mo ago

Ibex: A Typed DataFrame Language with C++ Code Generation

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www.bloomberg.com 5mo ago

Trump's Global Tariffs Struck Down by US Supreme Court

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7pts1
community.intel.com 5mo ago

Intel and SoftBank Subsidiary Saimemory Collaborate to Advance Next-Gen Memory

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2pts0
www.theguardian.com 7mo ago

Trump suspends US green card lottery in wake of Brown and MIT shootings

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16pts1
stackoverflow.com 7mo ago

StackOverflow: AI Assist

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www.businessinsider.com 7mo ago

14yo won $25k for origami that holds 10k times its weight

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43pts9
langdev.stackexchange.com 8mo ago

Incremental Compilation in Recursive‑Descent Parser (Roslyn)

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www.reuters.com 1y ago

India bars Jane Street from its securities market, citing manipulation

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8pts0
www.youtube.com 1y ago

Terence Tao – Machine-Assisted Proofs (February 19, 2025) [video]

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huggingface.co 1y ago

Hugging Face Smolagents

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www.amazon.science 1y ago

Chronos: Learning the language of time series

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scottaaronson.blog 1y ago

The Google Willow Thing

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venturebeat.com 1y ago

Google Gemini surges to #1 be but benchmarks don't tell the whole story

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github.com 2y ago

Positron: A next-generation data science IDE built by Posit PBC

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tobydriscoll.net 3y ago

Fundamentals of Numerical Computation – Julia Edition

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bobjansen.net 3y ago

Drawing with ChatGPT and Tikz

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blog.schochastics.net 3y ago

Rang: Make ancient R code run again

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github.com 3y ago

Cib – Compile-Time Initialization and Build

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bootvis.nl 4y ago

CRAN reports UB in your R-package: How to fix it?

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nerdlegame.com 4y ago

Nerdle

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www.eecg.toronto.edu 5y ago

Notation as a Tool of Thought [pdf]

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www.scientificamerican.com 5y ago

Ultracold Quantum Collisions Have Been Achieved in Space for the First Time

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1pts0
blog.llvm.org 5y ago

Interactive C++ for Data Science

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www.microsoft.com 5y ago

Perceus: Garbage Free Reference Counting with Reuse [pdf]

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153pts44
www.microsoft.com 5y ago

Perceus: Garbage Free Reference Counting with Reuse [pdf]

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www.quantamagazine.org 5y ago

Soil’s Microbial Market Shows the Ruthless Side of Forests

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sourceware.org 5y ago

Year old bug in glibc phtread

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en.wikipedia.org 5y ago

George Green (Mathematician)

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3pts0

For him, the cost of editing was much larger. Condensing your writing in his time meant rewriting it more concisely, requiring strictly more time than collecting his thoughts as he went.

With LLM's, we are in a new state of the world: it can expand any one sentence off hand remark in an essay.

It’s a terrible adage. There are thousands of ways to cheat honest people that place bets. For example, they definitely cheated everyone that only placed bets before June.

xAI joins SpaceX 6 months ago

A large telecommunications satellite operates at about 15kW. A Blackwell GPU consumes 1kW so you would be at 15 Blackwells per satellite. The cooling surface needs to scale linearly so there is little return to scale.

This doesn't sound like a good idea to me.

The author was frustrated that the error message identified him as an organisation (that was disabled) and mockingly refers to himself as the (disabled) organisation in the post.

At least, that’s my reading but it appears it confuses about half of the commenters here.

Sabotaging Bitcoin 7 months ago

This is incorrect. The miner just changes the header of the block and rehashes. The transaction set is fixed for many tries.

I agree this is easy enough to follow but I'd like to quibble about something else:

Comments should answer the question why you are not using some kind of hash set and do a single pass over the data and why it's OK to reorder the strings. One could reasonable expect that Dedupe shows first occurrences in order.

Sabotaging Bitcoin 7 months ago

This can have another explanation as well: the moment a block is found, the miner starts building on top of the previous block but hasn't constructed a new full block of transactions yet as that costs a bit of time to calculate and distribute. In this period, a new block could be found.

Aliasing 7 months ago

The whole series is excellent and as a non regular user of assembly I learned a ton.

Maybe, but buffer overflows would occur written in assembler written by experts as well. C is a fine portable assembler (could probably be better with the knowledge we have now) but programming is hard. My point: you can roughly expect an expert C programmer to produce as many bugs per unit of functionality as an expert assembly programmer.

I believe it to be likely that the C programmer would even writes the code faster and better because of the useful abstractions. An LLM will certainly write the code faster but it will contain more bugs (IME).

What about a strict subset of C#. The use case for F# seems to be shrinking because MS is putting all its energy in language.

I understand this as follows:

Legal: doesn’t break the rules of chess. For example: no pawns on the eighth rank or in check when it’s not their turn.

Reachable: there is a series of moves that lead to this position from the standard starting position.