Issue 413 :: Haskell Weekly Newsletter
Welcome to another issue of Haskell Weekly! Haskell is a safe, purely functional programming language with a fast, concurrent runtime. This is a weekly summary of what’s going on in its community.
Typically in Haskell you have to import things before you can use them. This is widely considered to be a good idea. However sometimes it’s convenient to use something without importing it, as long as that thing is unambiguous.
Neural networks are an example of composable systems, so it’s no surprise that they can be modeled in category theory, which is the ultimate science of composition. Moreover, the categorical ideas behind neural networks can be immediately implemented and tested in a programming language. In this post I will present the Haskell implementation of parametric lenses, generalize them to pre-lenses and introduce their profunctor representation. Using the profunctor representation I will build a working multi-layer perceptron.
Logs are a critical thing in production systems and I would like to start a discussion about bringing low-level support for efficient logging into GHC.
