Scala and Spark for Big Data Analytics

Traits

Scala provides a great functionality for you in order to extend and enrich your classes' behaviors. These traits are similar to the interface in which you define the function prototypes or signatures. So, with this, you can have mix-ins of functionality coming from different traits and, in this way, you enriched your classes' behavior. So, what's so good about traits in Scala? They enable the composition of classes from these traits, with traits being the building blocks. As always, let's look at in an example. This is how a conventional logging routine is set up in Java:

Note that, even though you can mix in any number of traits you want. Moreover, like Java, Scala does not have the support of multiple inheritances. However, in both ...