The Haskell Unfolder Episode 5: composing left folds

Today, 2023-06-14, at 1830 UTC (11:30 am PDT, 2:30 pm EDT, 7:30 pm BST, 20:30 CEST, …) we are streaming the fifth episode of the Haskell Unfolder live on YouTube:

In this episode, which is based on a former Well-Typed interview problem, we will discuss how to perform multiple simultaneous computations on a text file, gathering some statistics. We will use this as an example to discuss issues of performance, lazy evaluation, and elegance.

Most code discussed in this episode is rather fundamental and should in principle be understandable by beginners.

The Haskell Unfolder is a YouTube series about all things Haskell hosted by Edsko de Vries and Andres Löh, with episodes appearing approximately every two weeks.

We also have a GitHub repository with the code samples from the episodes:

And we have a public Google calendar listing the planned schedule:

(or ICal: https://calendar.google.com/calendar/ical/c_327de9ca66caa0307fd99de5b0e3fdd2ad1111ae857bd21659166c74b2b974f0%40group.calendar.google.com/public/basic.ics )

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