Haskell Series Migrating code to the Reader Monad The Reader Monad is one of the famous trio: Reader/Writer/State. They are all really powerful abstractions and fit specific scenarios like being able to read global configuration, being able to trace
ReasonML ReasonML - Http Server in Node.js Since the JavaScript interop in ReasonML is really powerful nothing stops us from writing some ReasonML for Node.js. Here's a very simple Node.js server: module Http = { type lib; type server; type
ReasonML ReasonML / BuckleScript JavaScript Interop JavaScript interop in ReasonML / BuckleScript looks intimidating in the beginning but after some time you learn to love it.
Haskell Series Monads by example Running :i Monad in ghci yields the following: class Applicative m => Monad (m :: * -> *) where (>>=) :: m a -> (a -> m b) -> m b (>
Haskell Series Applicatives by example Running :i Applicative in ghci yields the following: class Functor f => Applicative (f :: * -> *) where pure :: a -> f a (<*>) :: f (a -> b) -> f
Haskell Series Functors by example Running :i Functor in ghci yields the following: class Functor (f :: * -> *) where fmap :: (a -> b) -> f a -> f b (<$) :: a -> f b
JavaScript Series JavaScript Series: Context in JavaScript Functions Have you ever noticed this keyword in JavaScript and wondered how it works? Especially in a context of a function - where does its value come from? How can one find it useful?
JavaScript Series JavaScript Series: Adventures with Arrays | Reduce We've learned about filter and map operations on JavaScript arrays already. Our possibilities do not end there, though. Drawing conclusions Often, once we mapped and filtered data, we'd like to draw some conclusions.
JavaScript Series JavaScript Series: Adventures with Arrays | Filter In the last note we learned about applying a function to an array of elements. There is much more we can do with collections of elements. Ready to explore more advanced topics? Before
JavaScript Series JavaScript Series: Adventures with Arrays | Map In the previous article we learned how to tackle problems one step at a time. It’s time to get some practice and learn a little bit about one of the most common
JavaScript Series JavaScript Series: Approaching problems You have probably seen big JavaScript functions written using chained code and wondered how on earth can someone memorise so many methods and ensure the program is going to run correctly. Good thing
JavaScript Series JavaScript Series: Two Online Book Recommendations If you’re learning JavaScript from the ground up you should know there are some great JavaScript books available online for free. You can order their printed versions as well if you prefer
JavaScript Series JavaScript Series: Asynchronous Code - Control The Chaos You learned already how to write asynchronous code and as promised it didn’t get too complicated. We’ve touched the basics but the rules apply to a wider range of APIs. It’
JavaScript Series JavaScript Series: Asynchronous Code - Introduction You’re going to often hear that things in JavaScript happen asynchronously from time to time. You’re also going to hear about callbacks, callback hell, race conditions, promises, generator functions and await/
JavaScript Series JavaScript Series: Cheatsheet A typical thing you do when starting out with a new language is that you go and learn from tutorials, grab a book or watch some videos. They often focus on many details
JavaScript Series JavaScript Series: Tools People starting out may feel alone in the dark not really knowing where to start out. First of all, JavaScript was invented as a language that good old HTML makes websites slightly more
JavaScript Series JavaScript Series: Back to Basics Front-End industry changes very quickly nowadays. Unfortunately, as it improves we forget about those who freshly started out. Grunt, Gulp, Webpack, Rollup, Transpilers, React, Angular, Flux.. wait.. what? I can’t really imagine
