#SPARK SCALA CODE#

Here the only variable used in the function body, i * 10, is i, which is defined as a parameter to the functionĪns: A Trait can be defined as a unit which Encapsulates the method and its variables or fields. The following example will help us understand in a better way. They can be accessed if you return them from the method.Īns: Closure is considered as a Function whose return value is Dependent upon the value of one or more variables declared outside the closure function.

Local variables are declared inside a method and they are accessible only inside the method.

These are accessed inside a method, but it is possible to access them from outside the method provided by a Reference. Method parameters are mainly used to Pass values to the methods.

Method parameters are strictly Immutable.

Fields can be declared using var as well as val.

Fields are variables declared inside an object and they can be accessed anywhere inside the program depending upon the access modifiers.

Explain the scope provided for variables in Scala.Īns: There are three different scopes depending upon their use. We can have our classes extend App to render the executable code.Īns: A Higher-order function is a function that does at least one of the following: takes one or more Functions as Arguments, returns a Function as its result. The App trait can be used to quickly turn Objects into Executable programs. Scala Interview Questions: Intermediate LevelĪns: App is a helper class that holds the main method and its Members together.

You can even check out the details of Big Data with the Data Engineering Certification in India. Now, Let us move to the next level of interview questions which happen to be the Scala Intermediate Level Interview Questions. So, with this, we finished some questions on the Beginner Level. How is a Class different from an Object?Īns: Class combines the data and its methods whereas an Object is one particular Instance in a class. Unlike an Array or List, a tuple is Immutable and can hold objects with different Datatypes. In order for a Tail recursive, the call back to the function must be the last function to be performed.Īns: Scala tuples combine a Finite number of items together so that the programmer can Pass a tuple around as a Whole. It is a technique used frequently in Functional programming. For example, a function ‘A’ calls function ‘B’, which calls the function ‘C’. Scala has Native Tuples and Concise codeĪns: The following are the Operators in Scala:Īns: ‘ Recursion’ is a function that calls itself.Singleton objects are a cleaner solution than Static.It is both Object-Oriented and Functional.It is highly Maintainable and Productive.This sort of lazy computation enhances the Performance of the program.Īns: Some of the major Advantages of Scala are as follows: The values in Immutable Variables do not support changes.Īns: In simple words, we define Stream as a Lazy list which evaluates the elements only when it needs to.We declare Immutable Variables using the val keyword.The values in the Mutable Variables support Changes.We Declare Mutable Variables by using the var keyword.Mention the types of Variables in Scala? And What is the difference between them?Īns: The Variables in Scala are mainly of two types: Hence, Scala is the fusion of both Object-oriented and Functional programming features.Īns: Some of the Frameworks supported by Scala are as follows:

Explain how Scala is both Functional and Object-oriented Programming Language?Īns: Scala treats every single value as an Object which even includes Functions.

#SPARK SCALA CODE#

It can integrate itself with Java Virtual Machine and compile the code written. Scala Interview Questions: Beginner LevelĪns: Scalais a Java-based Hybrid programming language which is the fusion of both F unctional and Object-Oriented Programming Language features.

Scala Interview Questions: Advanced Level.Scala Interview Questions: Intermediate Level.Scala Interview Questions: Beginner Level.This Scala Interview Questions article will cover the crucial questions that can help you bag a job. Scala is dominating the well-enrooted languages like Java and Python. Scala, the Unrivalled Programming Language with its phenomenal capabilities in handling P etabytes of Big-data with ease.

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