Magic Methods, Lazy Evaluation, and Don't creating useless indexes

Wed 04 Jan 2023

Python Magic Methods You Haven't Heard About

Python's magic methods - also known as dunder (double underscore) methods - can be used to implement a lot of cool things. Most of the time we use them for simple stuff, such as constructors (__init__), string representation (__str__, __repr__) or arithmetic operators (__add__/__mul__). There are however many more magic methods which you probably haven't heard about and in this article we will explore all of them (even the hidden and undocumented)!

Source: Python Magic Methods You Haven't Heard About, an article by Martin Heinz.

python

Lazy Evaluation Using Recursive Python Generators

We all are familiar with Python's generators and all their benefits. But, what if I told you that we can make them even better by combining them with recursion? So, let's see how we can use them to implement "lazy recursion" and supercharge what we already do with generators in Python!

Source: Lazy Evaluation Using Recursive Python Generators, an article by Martin Heinz.

python

Don't do this: creating useless indexes

I’d like to talk about a fight I’m having with some developers (most developers?) almost every time I’m called for performance reasons: stop creating more indexes and only keep the useful ones!

Source: Don't do this: creating useless indexes, an article by Lætitia Avrot.

postgres