Building Blocks of Scala

Our aim as programmers is to provide a solution to a problem through some logical implementation. Programming languages work as a tool for just that. When we implement a solution to a problem, we must be able to describe the problem (specification) so that a programming language can verify (verification) whether the solution indeed solves the problem.

For implementation, we use various programming constructs, which are basic entities with some syntactic rules. These entities work as building blocks for any programming language. In Scala, we have similar syntax to almost any other programming language. We use keyword/name/classifier/bound-entity. In this chapter, our aim is to get familiar with some of the building blocks. We'll go through:

• The val and var keywords
• Literals
• Data types
• Type Inference
• Operators
• Wrapper classes
• String interpolation