Summary WSGIApplicationGroup is a name of the Python sub-interpreter. You don’t need sub-interpreters if you run mod_wsgi in daemon mode (i.e. with dedicated processes). Always set WSGIApplicationGroup to %{GLOBAL}. If […]
TL;DR Under certain circumstances you won’t be able to access an HTTPS site with invalid certificate from Chrome, unless you type a magic cheat code “thisisunsafe“. I was debugging a […]
I took interest in C++ random number generation because of the concept of regular_invocable. To my understanding, regular_invocable is C++’s notion of a “pure function”, or something really close to […]
It’s pretty old stuff, but still… Here’s how you typically generate a random number in C++: Let’s dissect it a little. On the one hand, “random_device” is a rather nebulous […]
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 […]
When we write a JOIN statement in SQL, it usually goes like this SELECT {columns} FROM parent LEFT JOIN child ON child.parent_id = parent.id Does it ever make sense for […]
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 […]
