DEV Community: Bas Terwijn

Insertion Sort visualized with memory_graph

Bas Terwijn — Tue, 11 Nov 2025 10:10:06 +0000

Algorithms can at first seem complex to students, but with memory_graph every step is clearly visualized, giving students an intuitive understanding of what their code is doing and making bugs much easier to fix. Here's an example Insertion Sort algorithm:

Python Data Model exercise

Bas Terwijn — Sat, 08 Nov 2025 20:13:19 +0000

A fun exercise to help build the right mental model for Python data. The “Solution” link uses memory_graph to visualize execution and reveal what’s actually happening, good luck.

Writing a binary tree data structure is easier when you can see the structure of your data

Bas Terwijn — Mon, 19 May 2025 14:40:56 +0000

Visualized in Visual Studio Code using Python package memory_graph.

Recursion in Python

Bas Terwijn — Tue, 13 May 2025 20:49:20 +0000

Recursion gets easier when you can see that each function call has its own variables on the call stack.

🧠 Understand the Python Data Model better using memory_graph
🎥 Watch the explainer on Python Mutability

Python Mutability

Bas Terwijn — Tue, 13 May 2025 09:58:44 +0000

Changing a value of immutable type results in an automatic copy
Changing a value of mutable type causes it to mutate in place

🧠 Understand the Python Data Model better using memory_graph
🎥 Watch the explainer on Python Mutability

Graph Python data while debugging

Bas Terwijn — Tue, 13 May 2025 00:01:56 +0000

Using memory_graph in the Visual Studio Code deugger.

🎥 Watch the explainer on Python Mutability

Python data visualizer: memory_graph

Bas Terwijn — Sun, 11 May 2025 12:33:40 +0000

🧠 Debug Python code smarter, not harder.
Use memory_graph to visualize your Python data and improve your Mental Data Model — so you can fix bugs faster and understand mutability at a glance.

🎥 Watch the explainer on Python Mutability