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• Play – It is used in the development of web applications.
• Spark – Popular data processing framework.
• Lift – a web framework

Scala List

• The Scala package scala.collection.immutable defines list.
• Each entry in a Scala list must be of the same type.
• A List has many methods to add, prepend, max, min, and so on to improve its usability.
• During list building, the implementation takes advantage of mutable state.

• val variable_name: List = List(item1, item2, item3)

• val variable_name = List(item1, item2, item3)

Scala Array

• Single dimensional array
  • Used to keep elements in sequential order Array items are kept in a single block of memory.
• Multidimensional array
  • An array that stores data as a matrix. Depending on your needs, you can generate arrays ranging from two to three, four, and many more dimensions.

• var z:Array = new Array(3)

• var z = new Array(3)

Scala Jobs

• Software Engineer
• Scala Developer
• Scala Programming Language Application Lead
• Senior Software Engineer
• Junior Scala Research Engineer
• Big Data Engineer
• Application Developer
• IT Consultant

Scala Enum

• Many functions were inherited when we extended the Enumeration class. Identification is one of them.
• Scala includes an Enumeration class that we can extend to create our enumerations.
• Every Enumeration constant represents an Enumeration object.
• Unlike Java or C, there is no enum keyword in Scala.
• The evaluation's val members are defined as enumeration values.

Scala 3 TypeClass

• describing how a type that you do not own (from a standard or third-party library) complies with such behavior
• expressing such behavior for numerous types without involving sub-typing relationships (one extends another) among those kinds (see: ad hoc polymorphism for instance)

Append to Sequence Scala

• Use + to append one item.
• Use ++ to append multiple elements.
• To add one thing, use +.
• Use ++ to prepend multiple items.

Scala Question and Answers