Example #1: Read from a list & write to a list
Java Way in Scala
Output: List(Java Programming, Scala Programming,
…
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02: Coding Scala Way – Recursion & Iterator in FP
This extends Coding Scala Way – Part 1 Can you write the following code written in Java the Scala way? Java coding question on recursion and generics Q. … Read...
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Login Register 100+ Free Java interview FAQs 100+ Free Big Data interview FAQs03: Coding Scala Way – Lazy Eval
Example #6: Lazy initialization & evaluation of code Scala support “views“, which are collections that can be lazily evaluated. One use for views is when you need to traverse a...
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Login Register 100+ Free Java interview FAQs 100+ Free Big Data interview FAQs04: Coding Scala Way – Null checks with Option-Some-None
Example #10: Null checks with “Option-Some-None”
Nulls in Scala is a code smell, and a better way to handle null values is with an “Option“, which has 2 sub classes “
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05: Coding Scala Way – FP concepts
Example #13: Explain the concepts
Can you explain the Scala concepts applied in the following code snippets?
Output:
1.
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06: Coding Scala Way – Reduce & Compose functions
Example #14: Reduce operations Given a list of functions as shown below, how will you go about applying all the functions in the list to each input number and sum...
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Login Register 100+ Free Java interview FAQs 100+ Free Big Data interview FAQs07: Coding Scala Way – Regular Expressions
Example #16: Regular Expression Regular expression (aka regex) to identify numbers in a string. Invoking “findFirstIn” and “findAll” functions of the “Regex” class. “[0-9]+”.r is a short form instead of...
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Login Register 100+ Free Java interview FAQs 100+ Free Big Data interview FAQs08: Coding Scala Way – Recursion & Higher Order Function
Example #20: nth Fibonacci number
Q1 What is wrong with the following recursive approach to compute the nth Fibonacci number?
A1 It “hangs”
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09: Coding Scala Way – Fibonacci Series
Example #22: Fibonacci series in Scala This extends determine the nth fibonacci number using Scala. In this let’s print the Fibonacci series of length n. Output: Q1 Is the above...
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Login Register 100+ Free Java interview FAQs 100+ Free Big Data interview FAQs10: Coding Scala Way – groupBy, mapValues & identity
Java developers need to learn Coding Scala Way. Scala way of coding is quite different & you need to unlearn Java way of coding
Question: Given a list of numbers,
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11: Coding Scala Way – Actors with Akka – part 1
We already saw in Java: Producer and Consumer Java Multi-threading code. This extends the tutorial “Simple Akka tutorial in Scala step by step” for setting up the environment with right plugins and libraries with Eclipse &
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12: Coding Scala Way – Actors with Akka “Ask Pattern” – Part 2
Actors with Akka “Ask Pattern” is for getting a reply or a response to a message that was sent by a sender. Use ? or ask method. … Read more...
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Login Register 100+ Free Java interview FAQs 100+ Free Big Data interview FAQs13: Coding Scala Way – 2 Actors with Akka – part 3
This extends Actors with Akka – part 1. This “Akka with actors” shows how messages passed among actors in the system. This is known as the reactor pattern based on...
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