Creating Django REST API with custom user model and tests

Prepare for change by building for flexibility

In this short series of articles, I'd like to share how to implement granular, resource-level role-based access control in Django. We'll…

How to process CPU-intensive tasks from asynchronous stream

Avoid callbacks with asyncio.run_in_executor

Hi! In the previous article , we saw how to speed up I/O-bound tasks with multithreading without any callbacks. In this article, I'd like…

How to speed up I/O-intensive tasks with multithreading and asyncio

Avoid callbacks with asyncio like a boss

Recently I had to perform a batch processing task where a thousands of images were downloaded from S3, the images were processed and then…

Are you an ideal team player?

Quick quiz from Patrick Lencioni's Ideal Team Player book

The Five Dysfunctions of a Team by Patrick Lencioni is a classic in teamwork literature. Recently I've been reading the author's follow-up…

Functional programming tips to power up your Python code

List comprehensions, frozen dataclasses, etc.

Hi! In this post, I'd like to present my favorite functional programming techniques (FP) for Python. I'm a big fan of FP as I've found that…

My three favorite non-programming books for developers

To maybe make your career in software development more satisfactory

Back when starting my first software development job I thought my success at work would be directly determined by my programming skills. Of…

Why I love learning functional programming

Yet another blog post on why learning functional programming is fun and useful

This is the first part of a series on my journey in learning functional programming (FP). In this first part, I'd like to share why I spend…

How I accidentally learned functional programming

By writing classes with too many responsibilities.

I had two courses in programming at the university, in Java and C. The Java course taught object-oriented programming: objects, classes…

Introduction to property-based testing

Verify assumptions about your code.

Property-based testing is a testing paradigm supporting regular example-based unit tests. In the Pragmatic Programmer book, the authors…

Introduction to composable optics with monocle-ts

With io-ts, Elvis and Metallica.

Optics are a functional programming toolbox for zooming into nested data structures. They are designed for composability, allowing you to…

Covariance and contravariance in generic types

With Python and corgis.

Static typing is awesome. It helps to detect bugs, acts as in-code documentation and makes development more enjoyable. Recently I've started…

Using fp-ts for HTTP requests and validation

How to use TaskEither, flow and pipe for smooth pipelines.

fp-ts is a great TypeScript library for functional programming. I haven't found that many real world usage examples out there, so I thought…