Raycasting
Raycasting is a rendering technique that casts a series of Rays for each vertical slice of the screen in the direction a player is …
Articles in the permanent category
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Recursive queries in PostgreSQL
For some data relationships in Postgres (or any other relational database that speaks SQL), recursive queries are near inevitable. Let's say you have some top-level …
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Mean Absolute Error
Mean Absolute Error (MAE) is a metric for assessing Regression predictions. Simply take the average of the absolute error between all labels and predictions in …
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Root Mean-Squared Error
Root mean-squared error (RMSE) is a function for assessing Regression predictions.
Sometimes called L2 Loss because it takes the L2 Norm of the error vector …
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fork System Call
When a process spawns a separate process to handle some work, it invokes the
fork(2)system call.fork(2)duplicates the current process in …
