Scala is a pure Object-oriented programming language. But it also supports a functional programming approach. So, It provides built-in functions and allows us to create user-defined functions as well. Functions are first-class values in Scala.
Prerequisites to Learn Scala Programming: Beginner level Java knowledge (for instance, object-oriented programming with Java: what are variables, loops in Java, arrays in Java, how do you create an object, using collection and thread in Java).
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