Author Archives: Rafael Ruiz

Scala Implicits

Scala implicits: Presentations

This article is not going to be an in-depth look at the Scala implicits, it will be about what they are. This article is for those who start learning Scala and need a first-look to the implicits as well for … Read More

Scala Generics

Scala Generics III: Generalized type constraints

This is the third article in our series of Scala Generics ( we have already looked at upper and lower Scala Type bounds, Covariance and Contravariance) and today we are going to talk about constraints, to be more specific about generalized … Read More

Scala Generics

Scala Generics II: Covariance and Contravariance

In the previous article we looked at Scala Type bounds, today we will continue with Scala generics and talk about Covariance and Contravariance in generics. Liskov substitution principle (the L. of S.O.L.I.D.) specifies that, in a relation of inheritance, a type … Read More

F-Bound Over A Generic Type

F-bound over a generic type in Scala

In this article, I will be mentioning Comonads. If you know what they are, great, and if you don’t know, no worries, because this article’s main topic isn’t Comonads. It’s actually about Scala generics, about F-bound, about returning the “Current” Type … Read More

Scala Type Bounds

Scala Generics I: Scala type bounds

Generic types in Scala Generic types, abstract types, scala type bounds, all these concepts are unusual for software developers who are coming from languages in which the generics are not (or barely) used, so in this first article, we will … Read More

BDD: User Interface Testing

BDD: User Interface Testing

If you ever had to develop a website, I’m pretty sure you spent hours checking that the website looks correct and that the user flow through the pages is not broken after several changes. Trying the same flow over and … Read More