Prywatność w dobie agentów
Masz własny komputer, na nim prywatne pliki – starannie prowadzone notatki, dokumenty, projekty, a także zdjęcia uporządkowane latami – zaraz obok tych zrzuconych na szybko z telefonu w jedno miejsce. Oprócz tego cały …
Posts
To też jest inżynieria
W pracy jestem przyzwyczajony do myślenia w przestrzeni rozwiązań. Dostaję do analizy zadanie – problem, który trzeba jakoś rozwiązać i pozwalam sobie z nim pobyć. Innymi słowy, myślę nad rozwiązaniem. Lata pracy …
My Workflow for Agentic Coding
I’ve experimented with agentic coding for a while and I’ve developed a set of techniques – and a bit of intuition – how to work with agent to deliver actual value without sacrificing my soul as a software …
My first steps into 3D printing
One of my hobbies is tinkering with electronics and cheap microcontrollers from the ESP family. To complete a project, I often needed a case for things I built. One option is to buy a pre-made case, but instead I found …
When working with agent, close the loop
My first attempts with LLMs started in ChatGPT and were limited to silly debug prompts: questions containing stack trace, error logs and code snippets. The workflow was pure copy-paste back and forth between the chat and …
Konfiguracja wielu sieci WiFi w ESPHome
Moja obecna sieć domowa nadal jest daleka od tego, co uznałbym za stan docelowy. Oprócz głównego routera mam także wzmacniacz WiFi tworzący osobną sieć. Od czasu do czasu zmieniam lokalizację routera, a wiele moich …
Jak uruchomić Proxmox z USB przy użyciu GRUB
Kiedy ostatnim razem byłem zmuszony zainstalować świeży system Linux na moim starym laptopie, miałem okazję dowiedzieć się, jak zmusić GRUB do uruchomienia systemu przy użyciu bootloadera znajdującego się na dysku USB. …
Smart Home, po mojemu
Kiedy ludzie pytają mnie o elementy mojego Smart Home, często spodziewają się czegoś bardzo zaawansowanego technologicznie. Tymczasem to co widzą, to zwykły dom, który po prostu można obserwować, kontrolować i który jest …
Pisanie w erze AI
Zacząłem pisać, zanim generatywna sztuczna inteligencja stała się popularna. Nawet prosty artykuł zawsze zajmował mi dużo czasu. Dzisiaj autorzy mogą tworzyć1 i publikować wysokiej jakości treści szybciej niż …
Monitorowanie wydajności rekuperacji z użyciem ESPHome i Home Assistant
W moim domu posiadam mechaniczną wentylację z odzyskiem ciepła napędzaną przez urządzenie Stiebel Eltron V-400. W uproszczeniu jest to duży wentylator z kanałami nawiewnymi i wywiewnymi. Pomijając wbudowaną automatykę, …
Test your plans by reducing time
I couldn’t find any better phrase that describes the approach I’ve learned in the last year. It’s a simple piece of advice: Test your plans by reducing time. It’s easy to fall into the trap of …
Avoid using global git identity
When I clone a new project, I put the proper email address (e.g., a company email) as an author email in the local config stored in the repository. It worked fine until I started working for a client whose project is …
How to remove hard spaces from file using awk
Some tasks seem easy when we perform them manually, but new things come to light once we want to automate them. What can go wrong if we remove hard spaces from a text file using a script? If it’s a one-time …
How to decrypt PDF files on macOS
Some companies send encrypted PDF documents. If you’re a macOS user, Preview will ask you for the password each time you use quick look or open the document. Moreover, if you print that document, you’ll end …
Missing article image on Twitter due to GetMatch in Hugo template
Recently I received notification that somebody post information about my article on Twitter (thanks!). Twitter usually renders a link to blog posts as nice-looking cards. The card to my article shown up without a …
Line break in Markdown
There are a few different methods to enforce a line break in the same paragraph in Markdown syntax: HTML’s <br />, backslash and double space. Let’s consider each case.
Restore files from encrypted iPhone backup
I do not use iCloud backup for my iPhone. Instead, I do local encrypted backup, more or less regularly. I wanted to browse and find something from one of these backup. Did you know, that there is no native way on macOS …
Using local DNS in dhcpcd causes to ignore others DNS
I struggled with the strange behavior of dhcpcd on my Raspberry Pi powered by Raspbian. The RPi does many things on my local network, including ad-blocking thanks to the pihole service. I run pihole1 as a docker …
Specify timezone for tests in Node to get deterministic results
In one of my side projects in Node, I wanted to test if the object with the date is formatted correctly as a Markdown entry. The setup of the test was the easiest part. However, comparing the outcome of the formatted …
Synchronize two collections with different representations
We get used to reading about big things – high-level architectural solutions, design patterns in action, or big data processing. However, most of our problems are small and lie at the low-level in our code. One of them …
Selective serialization using serialization groups
When you ever develop an API in the Symfony framework1, you probably heard of the serializationGroup option. It allows you to define different groups of attributes to serialize and deserialize. However, defining these …
Why deprecation process is important, on the example of restic
I use restic as my backup solution, and I haven’t had any problem so far, but recently one of my health checks suddenly stopped working, telling me that something is wrong with my backup. On the other side, restic …
O obserwowaniu w Social Mediach
Problem z Social Mediami leży w ich społecznej części, w której to wszyscy traktujemy siebie wzajemnie jak przyjaciół. Niektórzy biorą to bardzo poważnie i udostępniają niemalże wszystko i wszystkim – w tym ludziom, …
Setup end-to-end encrypted cloud drive using rclone
Last time I’ve experimented with applying various encryption solutions to the public cloud storage such as Google Drive or OneDrive. They are relatively cheap online storage. However, I don’t consider them …
Rethinking writing
This blog is my third approach to regular writing. It’s almost three years old now, so it’s a good indicator, that this attempt was the successful one. Over time, I published more than 40 articles, which is …
How to type letters with accents and diacritics in Emacs
I’ve heard a lot of good things about Emacs and Org-mode package as the approach to write and organize plain-text notes. I recently found a doom-emacs project and I decided to give it a try. Unfortunately, in the …
Draw.io real-time collaboration using Visual Studio Code and Live Share
You’ve probably heard about draw.io which is one of the best free, open-source diagramming software. The tool is powerful. It supports many storage backends and could be integrated into other apps. But the one …
How to convince your boss to let you write tests
When we talk about software development, sooner or later someone starts a discussion about tests. In our world, tests are considered as something helpful and crucial to our work. However, sometimes we need to face with …
Why I migrated my blog from WordPress to Hugo
Before you start your blog, you have to perform a set of essential choices – topics you want to write about, domain name, and the way you’ll publish your content. I choose the self-hosted WordPress platform with a …
How to boot system from USB using GRUB
Almost every modern computer has a dedicated menu to choose from which device the system should boot. If not, there is an option in BIOS/UEFI to change that. But what if both options failed for some reason?
The form may limit you
Sometimes I feel a surge of creativity. It’s a shame not to use this state to create something remarkable. However, once I sit down to my desk trying to write some words or code, I realize that I should do this in …
Don't read later. Read it now.
I would like to confess a small lie that I told myself each time when I found something interesting on the Internet, but I didn’t have enough time to read it. It was Read later.
Find and insert reference to note on macOS using Alfred
Create connections between notes is the essential part of the whole note-taking process, and for sure, it leads to discovering outstanding ideas in the future. However, it requires extra effort during writing: you have …
Think big, start small
When I think about a new idea or my next goal in life, I usually think big. The goal has to be ambitious and attractive to me, otherwise, it’s not worth putting effort into it. However, big goals also overwhelm me, …
Quick access to any menu item in macOS apps
MacOS has a special shortcut I wish I have known them at the beginning of my journey with this system. The functionality is hidden in the menu in almost every app when you click on Help. I talk about this little search …
My 2019 Annual Review
The end of the year is presumably a good time for reflection and review. I don’t have any strict structure for annual reviews. I did them many times before, but I haven’t found any process that I stick to. I …
Running notes and information capturing on macOS using Alfred
List of books. Inspiring food for thoughts. Things I’ve done today. Big ideas that can help the community I live with. That’s are examples of running notes – useful notes, that I update all the time. This is …
Stop using specialized vocabulary
Each professional group has own specialized vocabulary. It consists of words often related to tools, technologies or processes. They make everyday communication smooth and effective. Yet, this way of communication is …
Why it's worth taking notes in plaintext
For most people, keeping notes and other stuff in text files is ridiculous – tons of services and apps could do it better. But what the better means? Despite the availability and diversity of note-taking solutions on the …
The selfie stick story
One of the problems during traveling in pair is to take photos of us together. Since we have enough photos “from hand” in our albums, I decided to buy a selfie stick.
Automate your macOS backup to Backblaze B2 using Restic and launchd
In this article, I would like to show you how to prepare the script that will back up your important files to the cloud storage using a tool called restic. Even though the article is specific for macOS and Backblaze B2, …
Write code for people
The first draft of this article was about the code-style. I wanted to show you why it is important and why we should care about it. But the longer I thought, the stronger conviction I gained, that the code-style – …
The hidden cost of self-hosted services
The Internet is teeming with services you can take advantage of. You can store your files in the cloud, share movies, organize photo collections, talk with friends, manage your projects and so on. It also means that your …
Collecting tiny thoughts
I collect lots of thoughts in my private notes. Some of them could be quite useful if I show them in a decent form. Unfortunately, they are too small to be a full article, so I decided to introduce another form of posts …
Use make as task runner
During development, you probably take advantage of some extra command-line tools. In PHP world it could be a mess detector or program to check the code style. The framework you use also exposes some functionalities to …
5 etapów bycia programistą
Niedawno minęło 5 lat, odkąd zacząłem zawodowo pracować jako programista. Pomimo że programowanie jako hobby towarzyszyło mi już dużo wcześniej, to dopiero praca dała mi przysłowiowego “kopa”, dzięki któremu …
Automatic file versioning after change using fswatch and git
I create a lot of notes. Seriously, I write tons of notes. Inspired by Getting Things Done method, I treat my mind as a thoughts generator rather than the storage. I capture thoughts, ideas, inspiring quotes, links, and …
How to use final in PHP?
If someone would ask me about my favorite keyword in PHP, I would certainly answer: final. It doesn’t mean I write this modifier in each class or method. It not only shows the intention but also provides a …
The practical difference between "findBy" and "getBy" in repositories
Repositories are a special example of a class. They usually have a lot of methods designed to retrieve data from the database or the other storage. To mark this operation in the name of the method, we can use one of the …
Quick start with TDD in JavaScript using Jest
JavaScript is one of the most versatile programming languages I know, however, I had a constant problem with the testing. Since I run into TDD, I was looking for something that allows me to build my solutions using this …
Set up multi-container environment using Docker Compose
I remember this time when I discovered Vagrant. The magic behind this tool and the general idea of scaffolding the whole environment using single command was pretty genius. Moreover, I had programmed on Windows and …
I've finished studies. Here are some of my thoughts
A long time since my last article. During the last few months, I was fully involved in my last big project at my university. Dozens of articles and books, hundreds of visited pages and thousands of words later I had …
The code is a common good, so be responsible for him
I joined to the project that was developed by one guy. He was an amazing developer with plenty of ideas and skills. He had also the best knowledge about the system – its domain, architecture, used solutions, hidden …
Did your team define own code deprecation strategy?
I didn’t always work in a larger team. At the beginning of my journey as a computer programmer, I was the only one person in a project. It meant that I had had a free-hand (or semi-free-hand) to choose how I could …
Don’t use properties and methods from outside the interface
It may sound obvious or even weird for people who programming in statically typed or compiled languages. In my work, I use PHP which is a dynamically typed language with optional strict typing introduced in version 7. At …
Why I removed my old accounts and why you should too
Whenever people say about New Year’s changes they, mainly think about resolutions, plans and set up goals. But this is also a great time to small retrospective both your personal and digital life. Let’s talk …
Inbox zero – efficient way to manage emails
Every day at least 30 new messages land in my mailbox. Newsletters, reminders, status updates, mentions, recommendations and even personal or business messages – each of them need my time and an attention. And no one …
Building the associative array – ideas
When we talk about arrays we usually mean the vector of something – primitives, objects or even arrays. But there are a lot of situation when we need to carry extra information with our data. We can use nested arrays but …
What is idempotence?
If you frown after reading idempotence, don’t worry. Although this word sounds unusual it conceals a simple mathematics property. Needless to say, this characteristic has also a big meaning in Computer Science. …
Why should you return early?
When I started my journey as a computer programmer, I had written my code in various way. In most cases, I translated requirements into specific conditions and statements, but I hadn’t taken too much care of …
My start with React and its rich ecosystem
I remember how I was excited discovering how much frontend frameworks like AngularJS could make my work easier. Even though I was a strong backend-oriented programmer I decided to learn the concept of Angular. I dug into …
Why you should use array functions instead of basic loops
Loop is the basic construction in each programming language. All repeatable operations are being done using loops. I think you know how the basic loops like while, do and for work and when you should use one of them. But …
Synchronize local files with Cryptomator Vault
Among thousands of files on my computer, I have some with special meanings for me. Photos, videos, papers, and spreadsheets – they occupy dedicated places within my filesystem. That’s the problem – they exist only on my …
Arguments in arrow function explained
ECMAScript 6 has an amazing feature called Arrow Function. It allows writing a function expression faster and smarter than traditional way (using functionkeyword). Worth to know, it’s not a one to one replacement for …
Blackboxing JavaScript using Chrome DevTools
Lots of JavaScript projects use a dozen of various frameworks, libraries, and third-party scripts. More often code which you produce largely depends from vendors’ work. The good example is jQuery and Lodash libraries …
Try explain the JavaScript’s truth inconsistency
Everyone has an own version of a truth. I have the own truth, you have your own. JavaScript has many truths and it’s probably no problem until you’ll start to use it implicitly. This article shows and explains one of the …
Do your constants make sense?
Do you use constants in your code? Probably a lot. Even if you don’t define your own is highly probable that you use some constants defined by other libraries or a language itself. Constants are very powerful unless you …
What I learned by doing my simple personal project
In September, I wanted to try something new, so I started a simple project to check my abilities in UX and front-end development. The idea was simple — create customizable, reusable and highly accessible buttons. I have …