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Haskell is a purely functional programming language, featuring static typing, lazy evaluation, and monadic effects. The primary implementation is GHC, a high-performance compiler with a runtime supporting many forms of parallelism and concurrency.

2 votes
2 answers
763 views

Usage of lens for concise update of records

I'm new to Haskell. I'm developing a game-like simulation. I try to use lenses to update the state of the world. Current iteration of code works, but looks clumsy. I am trying to improve it, e.g. …
Michael Pankov's user avatar
5 votes
1 answer
143 views

Find index of lowest unique integer in each line of the file

The code below finds the index of the lowest unique integer on each line of the file. The numbering starts at 1, and when there's no unique value, the 0 should be output. The sample input looks like …
Michael Pankov's user avatar
8 votes
2 answers
2k views

Graham Scan convex hull algorithm

I'm beginning to learn Haskell. I've implemented the Graham Scan algorithm for detection of convex hull following the Real World Haskell book. …
Michael Pankov's user avatar