Generic classes are classes which take a type as a parameter. This means, one class can be used with different types without actually writing down it multiple times. They are particularly useful for collection classes. Defining a generic class: Generic classes take a type as a parameter within square brackets [ ]. One convention is to use the letter A as type parameter identifier, though Continue Reading
In this blog, we will explore types of variances in Scala. In-variance Co-variance Contra-variance First, let’s talk about Types in Scala. scala> import java.util.ArrayList scala> var ref1: Any = “Hi” ref1: Any = Hi scala> var ref2: String = “Hi” ref2: String = Hi scala> ref1 = ref2 ref1: Any = Hi In the above example, ref1 is of type Any and ref2 is of Continue Reading
In this blog, I will put emphasis on the power and awesomeness of the Scala Type System. Also, I will try to reiterate that it is not difficult or complicated as perceived. In layman terms, the Scala Type system helps us keep the code tidy and type safe. So in this blog, I shall take you through the following : Parameterized types In-Variance Co-Variance Contra-Variance
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