Harshit Daga, Author at Knoldus Blogs

Scala3 Vlog: Enumerations

February 16, 2021February 16, 2021Dotty, Functional Programming, Scala, Tech Blogs#enums, #scala3, dotty, Functional Programming, singapore, singaporetech

Reading Time: < 1 minute Hello folks, We have released another video on Scala3 series which talks about Enums, short for Enumerations. Enums in Scala3 are more powerful as compared with Scala2. The reasons are: Scala3 enums are compatible with Java Enums. Pattern matching on Scala3 Enums is exhaustive. With Scala3 Enums, you can also create your ADTs in more lighter way. Watch out the video on Scala3 Enums to get Continue Reading

Scala3 Vlog: Intersection Types

February 6, 2021February 6, 2021Dotty, Functional Programming, Scala, Tech Blogs#Dotty, #intersectiontype, #intersectiontypes, #scala3, #Singapore, Knoldus Singapore, scala, singaporetech

Reading Time: < 1 minute Intersection Type is a type which is the mixin of multiple types.
The intersection types of two different type A and B would be written as A & B in Scala3

Scala3 Vlog: Union Types

January 4, 2021January 4, 2021Dotty, Functional Programming, Scala#Singapore, #uniontype, #uniontypes, Knoldus Singapore, scala, scala3, singapore, singaporetech

Reading Time: < 1 minute Hello folks, We have released another video on Scala3 series which talks about a new type i.e. Union Types. Union Type is a type which is one of a set of other type, or a type of a variable or expression which can consist of multiple types. And the main reason for introducing Union Types in Scala is that for every set of types, we Continue Reading

Scala3 Vlog: Starting with Scala3

December 24, 2020December 24, 2020Dotty, Functional Programming, Scala, Tech Blogs#Singapore, dotty, Knoldus Singapore, lightbend, scala3, singapore, singaporetech

Reading Time: < 1 minute Hello folks,As we all know that Scala3 (or Dotty) launch can happen anytime soon. So here we bring you a video on how can you write your first code in Scala3 with your favourite IDE (i.e. Intellij Idea) with minimal setup. Watch out the first video on Scala3.

Match Types in Dotty

August 10, 2020August 10, 2020Dotty, Functional Programming, Scala, Tech Blogsdotty, Knoldus Singapore, scala, singapore, singaporetech

Reading Time: 2 minutes As we already know that Dotty is the new Scala version and will obviously be more stronger and powerful then Scala 2.In Scala-2, pattern matching is only applicable to the objects and not on the types. But with the new Scala compiler i.e Dotty, it is possible to apply matching on Types also. For example, The Container is a type which gets reduce to further Continue Reading

Dotty – Intersection Types

June 7, 2020June 7, 2020Lightbend, Scaladotty, Knoldus Singapore, scala3, singapore, singaporetech

Reading Time: 2 minutes Dotty is the new Scala compiler that is written in Scala 2 and it will be future Scala i.e Scala 3.0. The current version of Dotty is 0.24.0-RC1 and very soon the first stable version will be launched in the market. Dotty is completely open source and it is available on GitHub. With this blog, I am going to share you one of New Types Continue Reading

Accessing private fields and methods using reflection

April 26, 2020April 26, 2020Java, Scala, scalatest, Testing, Testing, Unit Testing#java, compile time reflection, opensource, Scala Libraries, ScalaTest, singapore, singaporetech, technology

Reading Time: 3 minutes How to access private methods of a class.
You can do this by the help of reflections at runtime.

Flyway with SBT

March 19, 2020March 19, 2020Database, Scala, software, SQLDatabase, Flyway, Migration, MySql, Scala Libraries, singapore, singaporetech, technology

Reading Time: 3 minutes flyway integration with sbt | Database migration

How to cope with the threats of System failures?

August 17, 2017August 8, 2018Scala

Reading Time: 4 minutes Systems are designed to respond to its users in any case. But, some of the times, due to some reasons system may fail. System failures can cause huge loss to its users as well as also creates some sort of fear into them; and with this fear, users lose trust in the system which definitely affects system’s goodwill and market value. For example, a few Continue Reading

How to lazily evaluate collections in Scala

April 10, 2017August 8, 2018Scala

Reading Time: 2 minutes The Scala language provides to ways to implement the collections. One is strict and other is non-strict or lazy. Whenever, the instance of a collections in scala(except for the Streams) is created, it creates the strict version of the collection which means memory is allocated at the same time. A simple example of strict collection is: val list = List(1,2,3,4,5,6,7,8,9,10) list: List[Int] = List(1, 2, Continue Reading

Knolx: Introduction to Apache Cassandra

October 14, 2016August 8, 2018Cassandra, Scala

Reading Time: < 1 minute Hello everyone, Knoldus organized a KnolX session on Friday, 07 October 2016. In that session, we had an introductory session on Apache Cassandra. Cassandra is a distributed database which allows us to store data on multiple nodes with multiple replicas in such a way that even if a node goes down, another node can take charge of that node. The slides for the session are as Continue Reading

Knolx: Introduction to Akka-Http

March 16, 2016August 8, 2018Scala

Reading Time: < 1 minute Hi all, Knoldus has organized an one hour session on 9th March 2016 at 5:00 PM. Topic was Introduction to Akka-Http. Many people have joined and enjoyed the session. I am going to share the slides here. Please let me know if you have any question related to linked slides.

Introduction to JNI- Java Native Interface

January 27, 2016August 8, 2018Java, Scala, TutorialJava Interface, Java native interface, Native Interface

Reading Time: 2 minutes The Java Native Interface (JNI) is a native programming interface in JDK. It is used to call C/C++ libraries from the libraries written in Java and vice-versa. This is a java API which bridges the gap between C/C++ and Java. Why do we use Java Native Interface(JNI)? JNI calls are used when we already have a library which is written in C/C++ language and we Continue Reading