Viewing profile — raluk

I am running email server for my private domain using https://github.com/docker-mailserver/docker-mailserver . One day in 2023 i decided that beside of dkim i maybe should also ena…

At first glance looks like stipped C++ with minor differences. For example go have row polimorphism compared to OOP in C++. What else is there that C++ does not have?

In similar fashon in year 2009 Amazon deleted books from Kindle. One of them was 1984 from George Orwell.

This algebra is also called bicyclic semigroup https://en.wikipedia.org/wiki/Bicyclic_semigroup

In C / C++ there are two kinds of undefined behaviour. One is where there is written in standard what UB is. Another one is everthing else that is not in standard.

Spending few weeks trying to understand Kalman filterm, I figured out that I need to understand all if the following: 1. Model of system 2. Internal state 3. How is optimal estimat…

It improves immune system and geneal wellbeing. It is pain that you can get used to and I kind of enyoj it now in some weird way. It is hard, requires some dedication and brings so…

Over the hollidays I was working on Steve Balmers interview puzzle. https://rahne.si/optimisation/2026/01/07/steve-ballmer-inter... What I am most proud of is that I got the soluti…

Using only cold water for showers.

What are protental issues with compiler, by just disabling borrow checker? If I recall correctly some compiler optimisations for rust can not be done in C/C++ because of restrictio…

"Math nerd explains how to spend 3 days proving 1+1=2" -> Original "From Zero to QED: An informal introduction to formality with Lean 4" https://news.ycombinator.com/item?id=462593…

Years ago I wrote c++ library for stream compostion. Something like C++20 ranges. It turns out that as long as you compose everything with lambdas, compiled code is same as it woul…

How much is fft used for AI? Seems that attention and convolution could benefit from this.

Having lexicial scope it is same as -> defer fn{if(some condition) x() }() within scope.

Given that you die, when one vital organ dies it will eventaully hapen in this way or another. I read somwhere and that stuck in my brain, that maxmimal logevity for humans is esti…

This is what i hand in mind whit "manually handing of futures". In this case you have to write Promise1 = f1(); Promise2 = f2(); v1,v2 = await Join(Promise1, Promise2); return v1 +…

In there is also ApplicativeDo that works nicely with this. do x this is evaluated as applicative in same way.

One thing that most languages are lacking is expressing lazy return values. -> await f1() + await f2() and to express this concurently requres manually handing of futures.

Great exercise driven course is: https://github.com/system-f/lets-lens

https://blog.jle.im/entry/lenses-products-prisms-sums.html

Our team is working with soniox.com They are the most acurate model that works real time.

One problem with fast writing is that it requres more energy to transmit from reader to a card in order for a card that has no internal source of power, to toggle bits. It is harde…

How one writes circular circuit, for example stream of fibonnachi numbers or IIR filter? For IIR filter it would be nice if it has protoype like iir(sig : T, a : vec , b : vec ) ->…

For low level benchmarking papi https://icl.utk.edu/papi/ is great tool. It provides access for counters like cache misses, branch misses and number of cycles.