Summary Unlike many other languages, Python allows abstract static methods (see the reference). A class directly or indirectly deriving from abc.ABC cannot be instantiated, unless all its abstract methods are […]
![Are Python strings UTF-8? What is the complexity of s[n]?](https://ikriv.com/blog/wp-content/uploads/2025/03/string_encoding_comparison.png)
TL;DR Internally CPython stores strings with fixed character size of 1, 2, or 4 bytes, depending on the string [PEP-393]. The indexing operator s[n] takes constant time. UTF-8 representation can […]
https://codebeautify.org/sqlformatter all the way. It is a 3rd of a 4th link on Google, but it provides the best formatting and the best experience. You paste your ugly formatted SQL […]
A few days ago I discovered (with the help from my colleagues) that ARG instruction in Docker creates a true environment variable that is available inside the commands invoked at […]
Just recording my amazement here. Suppose you have a GraphQL server. How do you ask it what’s the query schema? You would expect something like calling https://myserver/graphql/schema? Nah, that would […]
Yesterday, I had an Internet outage at home. The Internet was down for several hours. This is a perfect time to use Mobile hotspot. But alas, it wasn’t working. I […]
TL;DR: Python statement from module import obj creates a copy of the object in the importing scope. In other words, from module import obj is roughly equivalent to obj = __import__(‘module’).obj. […]
Our RabbitMQ client written in Go failed with the following error message: rabbitmq | 2024-10-23 17:54:01.311544+00:00 [error] operation basic.ack caused a channel exception precondition_failed: unknown delivery tag {message_tag} Taken at […]
TL;DR Before transferring a new domain to a registrar, contact support, and make sure there are still live humans behind the robots. If there aren’t, RUN!!! UPDATE I’ve got my […]
Last night I was talking to something which could be a human or a robot, I could not tell. But that’s not necessarily a good thing: not only AI became […]
