Haskell Weekly

Mustache templates in Haskell

Mustache templates are popular logic-less templates that can be used in web development as well as in any other domain where interpolation of data into some sort of template is needed.

Making Movie Monad

Using only HTML, CSS, and JavaScript, you can use Electron to develop a desktop application. The nice part about Movie Monad, however, is that we will create the HTML, CSS, and JavaScript using Haskell.

Lens and Linear: 2048’s logic in 22 lines

It is actually a problem that can be solved elegantly in Haskell using a few Isos and Traversals. We’ll use the linear library for representing the data and the lens library for accessing it.

TechEmpower Benchmarks

Rather than wait for the official results, I ran the benchmarks with a handful of frameworks on a dedicated server. The results are, I think, enough to put these concerns to rest.

dbrecord-opaleye

dbrecord-opaleye is a haskell library that automatically takes care of changing the shape of your model depending on the operation (projection, aggregation, left join).

Bookkeeper

If we keep all of the field-to-type mappings at the type-level representation of a datatype, we can use that to not have to write IsLabel instances manually. As an added bonus, we’ll get anonymous records!

Pitfalls in Haskell

This text demonstrates the difficulties people often face when learning Haskell. It is perhaps biased by my own experiences, so it may emphasize things that C and Scheme have taught me. Those would be paranoia and flexibility.