November 09, 2023

Developing a Chessboard Image to FEN Converter with Elixir

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Source: youtube.com

Barrett Helms presented his journey creating an Elixir-based web application designed for practicing chess tactics. His goal was to develop an image recognition system that could interpret photos of chessboard setups and convert them into Forsyth-Edwards Notation (FEN) for easy integration and interactive display within the app. While most resources for image recognition opted for Python, Helms was determined to use Elixir. He faced challenges dealing with poor accuracy and overfitting during image detection and classification, and needed to adjust his approach for a more general application. His talk covered aspects from grayscale image processing, edge detection using OpenCV, and leveraging Rust for parts of the task where high performance was crucial. Helms also explored the use of LiveView for real-time updates, NXTensor for data management, and Axon for machine learning. Despite initial setbacks and a presentation hiccup due to environment issues, Helms successfully demonstrated a working prototype with perfect input and stressed the importance of broader training datasets for real-world applications.

Best Practices and Challenges with Dynamic Repos in Elixir's Ecto

Sam McDavid discusses the lessons his team learned while working with Ecto.Repo.put_dynamic_repo/1. They needed to store data for specific customers in a separate database with their own encryption keys, and the talk outlines their approach, the infrastructure changes required, and the challenges they faced.

Nov 08, 2023

Mastering Ecto.Query's fragment Macro in Elixir

Alexander Webb presents a talk at ElixirConf 2023 about Ecto's query DSL and how to use the `fragment` macro to unlock advanced Postgres query features and combine them with PG's JSON support and aggregates to write performant queries returning nested JSON.

Nov 07, 2023

Discovering the Hidden Value of Elixir Beyond Functional Programming

Owen Bickford discusses why Elixir is his preferred programming language, highlighting its functional paradigm, concurrency, and fault tolerance. He also delves into a lesser talked about feature of Elixir that allows it to solve problems previously considered unfit for the language and the BEAM.

Nov 06, 2023