Blog Archives
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01: Scala Functional Programming basics – pure functions, referential transparency & side effects

Q1. What is a pure function?
A1. A pure function is a function where the following conditions are met:

1) The Input solely determines the output.

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02: Scala FP basics: First-class function, higher order function, statements Vs expressions, immutability & recursion

This extends Scala Functional Programming basics – pure functions, referential transparency, side effects, etc.

Q1. What is a first-class function?

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02B: Scala FP basics: Explain the below Scala code

Q. Can you explain the concepts used in the below code? Output: A. The above code runs the function “(x:Int) =x + 2” … Read more ›...

03: Q1 – Q6 Scala interview Q&As on Functional Programming

100+ FAQ Scala interview questions answered with code. Learn more about FP – 6 tips to transforming your thinking from OOP/imperative programming to functional programming (i.e. FP). … Read more...

04: Currying, partial application & functional composition in Scala

Let’s see how we can wire up functions with & without currying, and then touch on functional composition. Without currying Here are simple functions example that add, add10, … Read...

04: Q6 – Q12 Scala FP currying, closures & partial functions interview Q&As

This extends Q1 – Q5 Scala Functional Programming basics interview questions & answers Q6. What is a curried function in Scala? A6. … Read more ›...

05: Q13 – Q18 Scala FP combinators interview questions & answers

Q13. What are the different approaches in Scala to solve the following task?

Given numbers 1 to 6, and you need to extract out the odd numbers and double them,

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05: Q27 – Q32 Scala idioms Q&As on Option-Some-None, Try-Success-Failure and Either-Left-Right

Java has idioms like Try-Catch-Finally, Scala has idioms like 1) “Option-Some-None”, 2) Either-Left-Right 3) Try-Success-Failure. Q27. How does Scala try to solve the problem of getting rid of null values...

06: Scala Class Vs. Object and Companion object interview Q&As

Q1. Given the below Person.scala file with Person.calss, what will be the output?

A1. It prints the below text as when a Scala class is instantiated the statements in the body are executed after the object is constructed via the constructor defined in the class signature itself as “Person(name: String,

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06C: Q33 – Q40 Scala Futures and Promises Interview Q&As

Q33. What is a “Future” object in Scala? Is it an immutable object? A33. A Future is a holder object that holds a value (i.e. … Read more ›...

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