This page only mentions what I could recall at the moment of writing (or updating this document). There are likely more professional failures that I’ve forgotten about.
Some of the failures are accompanied with (unexpected at the time) positive or at least significant outcomes that could be directly attributed …
Quite a few software engineering organizations split their sets of automatic tests into two or more suites. Decisions to start certain suites may be tied to engineers’ actions, such as a commit, a pull request, a merge, a release, a change of dependencies, etc. Collectively I will call these suites …
Invisibly but firmly, quality of tests make or break software projects. The production code brings money today. But it is the quality of its accompanying test suite that ensures tomorrow’s production code keeps bringing money going forward.
Let’s talk about some routines that people should perform from time …
I’ve been using test smells from Gerard Meszaros’ xUnit Patterns when reviewing pull requests for a while now. It is a good addition to the regular code smells (see e.g. Marcel Jerzyk’s catalog, although I am usually using a different set).
While code smells are usually applied …
Här är en idé på en inlärningsplan för stigcyklingslektionerna som vi organiserar för barn 8-11 år. Ordningen på teman är slumpmässig.
Forumtråden: https://happyride.se/forum/threads/restaureringstraden-manitou-splice.3707736/.
This is a draft I started to write two years ago but never finished. I want to put it out anyway.
Recently I encountered a real danger in form of the primitive obsession code smell: https://luzkan.github.io/smells/primitive-obsession.
Using int as function’s return created a confusion about how many many return
values the function may return, and whether or not they could be interpreted as
boolean value …
This is an older inquiry into whether Python as programming language allows undefined behavior (UD) in the same sense that it has in C and C++. That is, UD is cases of erroneous program behavior that is outside of the scope of the language facilities, which may be assumed by …
Written some time in 2023-2024. Finalized in 2026, when I was about to change the job.
Semi-structured thoughts about what a new position should have for me to be worth trying.
A few projects that I completed as part of my academic work, in my spare time or as a part of job interview processes.
Погода и дорога: практически идеальные, скорее “слишком сухо”. +15° вечером, +12° ночью, +20° днём. Солнце всё время, ветер до 10 м/c.
Маршрут: 11 км вперёд, 11 км назад. Из них в каждый день 9 км по грунтовым дорогам, около 1 км по тропам, около 1 км по асфальту.
Стоянка …
Upd 2025-05-03.
Написано на основе предыдущих списков https://atakua.org/w/checklist-example.html и https://atakua.org/old-wp/wp-content/uploads/2014/06/triplist.pdf, адаптировано для ПВД в условиях Стокгольма в мае.
Ожидаемая погода в районе похода: перепад температур от +5 до +25°C, возможны палящее солнце, дождь …
Recently I was asked to review a …
There is a good rule of designing functions (and class methods, which are a variant of functions): a function should do one thing only, and do it well.
A corollary of it is another tactical design rule: a function should have as few arguments as possible. Three is the absolute …
For every measurement, there is at most one (i.e., sometimes there are zero) way to carry it out correctly, and innumerable ways to do it wrong.
I want to share a few pitfalls that I fell into (and probably will do it again in the future) while working on …
Finite state machine (FSM) is both a strict theoretical concept and a practically useful mechanism to build and reason about certain kinds of software. Unit tests is a category of tests that focuses on having the minimum of dependencies when making verifiable assertions about production software’s behavior. Neither is …
Open-Closed Principle (OCP) is one of the SOLID principles. Code should be open to extension …
Let’s see if I can express those patterns found in the GoF book, meant for object-oriented languages …
Publicerad i augusti 2026 :-/
Skaljacka av Gore i storlek XL.
Liten Knipex tång
Knipex tångnyckel 250 mm
https://www.clasohlson.com/se/Knipex-tangnyckel-250-mm/p/41-1789
https://www.amazon.se/T%C3%A5ngnyckel-skruvnyckel-flerkomponents%C3%B6verdrag-250-86/dp/B01H73UPXE
“What/who tests the tests?” This question arises at some point while learning Test-Driven Development (TDD). If every piece of production code ends up tested in the TDD process by construction, does the same apply to the code of the produced tests themselves?
It’s time to go meta.
Before we talk about how a test case could end, let’s recall its canonical structure. It is needed because we will refer to events that can happen in test’s …
The following is quoted from Wilbert McKeachie, McKeachie’s Teaching Tips, an older edition from the 1990-s.
Teachers’ manuals that are provided for many textbooks contain multiple-choice items. You will not be able to rely on a manual as the source of all your questions, because it often will not …
https://www.byggmax.se/verktygstavla-tellbe-p705228#1250=89042
https://www.clasohlson.com/se/Knipex-tangnyckel-250-mm/p/41-1789
https://www.amazon.se/T%C3%A5ngnyckel-skruvnyckel-flerkomponents%C3%B6verdrag-250-86/dp/B01H73UPXE