Scala Days

RDD to DataFrame Conversion in Spark

Reading Time: 2 minutes Overview In this tutorial, we’ll learn how to convert an RDD to a DataFrame in Spark. We’ll look into the details by calling each method with different parameters. Along the way, we’ll see some interesting examples that’ll help us understand concepts better. RDD and DataFrame in Spark RDD and DataFrame are two major APIs in Spark for holding and processing data. It provides us with low-level APIs for processing distributed data. Continue Reading

Scala Traits in Simple words

Reading Time: 2 minutes In this blog post, we will talk about traits in Scala. Then we will discuss how is a trait different from abstract classes. Scala Traits A trait is similar to a partial implementation of an interface. A trait in Scala can contain abstract and non-abstract methods. We can make a trait with all abstract methods or some abstract methods and some non-abstract methods. Variables declared Continue Reading

All you need to know about SOLID Principles

Reading Time: 3 minutes In this blog post, we will discuss about SOLID principles in Scala which are the 5 most recommended design principles. What are SOLID Principles ? The abbreviation SOLID stands for a collection of principles that, when combined, make code more adaptable to change. SOLID principles assist us in making our software more readable, understandable, flexible. They serve as the foundation for developing object-oriented applications that Continue Reading

How to deal with Option data type in Scala

Reading Time: 3 minutes In this blog post, we will talk about Option data type in Scala. Then we will discuss some of the methods for dealing with options. Options In Scala, an Option is a carrier of a single or no element for a specified type. An Option[T] object can be either Some[T] or None object, which represents a value that is not present. Thus, options mainly come Continue Reading

How To Use Regular Expression In Scala

Reading Time: 3 minutes Hi folks, here I am in this article going to explain Regular expression. How to form regular expression in Scala. What is Regular Expression: A regular expression is a string of characters and punctuation that represents a search pattern. Popularized by Perl and command-line utilities like Grep, regular expressions are a standard feature in the libraries of most programming languages including Scala. In Scala, we Continue Reading

Build REST API in Scala with Play Framework

Reading Time: 4 minutes Overview In earlier blogs I discussed about play framework now lets we move to further topics on play. For building simple, CRUD-style REST APIs in Scala, the Play Framework is a good solution. It has an uncomplicated API that doesn’t require us to write too much code. In this blog, we’re going to build a REST API in Scala with Play. We’ll use JSON as Continue Reading

Introduction to the Play Framework

Reading Time: 3 minutes What Play is ? Play makes you more productive. Play is also a web framework whose HTTP interface issimple, convenient, flexible, and powerful. Most importantly, Play improves on themost popular non-Java web development languages and frameworks—PHP and Rubyon Rails—by introducing the advantages of the Java Virtual Machine (JVM). Project Structure Now, it’s time to load the project code into the IDE and look at the directory Continue Reading

Future Type Operation with Scala

Reading Time: 6 minutes Introduction Scala Future represents a result of an asynchronous computation that may or may not be available yet. When we create a new Future, Scala spawns a new thread and executes its code. Once the execution is finished, the result of the computation (value or exception) will be assigned to the Future. Type Future Operations Map When we have a Future instance, we can use the map method to transform its successful result Continue Reading

How To Use Pattern Matching

Reading Time: 3 minutes Overview In this blog, we will show a functional feature of Scala which is pattern matching. If you have used Java or .NET in the past, it may at first sight appear similar to switch statements. But, Scala’s pattern matching is a lot more powerful! Different ways of Pattern Matching 1. Pattern matching – a very basic example Suppose you want to test a variable called donutType. In the case that its value Continue Reading

Scala 3 Survey: Help Us Modernize the experience of Scala by taking the part in the Survey

Reading Time: 2 minutes Hey, Scala community! The future of technology is incredibly complex. Dotty Project or Scala 3 is on the horizon, and Knoldus wants to explore new directions that will benefit and excite technology users. The purpose of this brief survey is to find out what is your experience as a developer, your expectations for Scala 3, and your view on the future of Scala.  Knoldus is Continue Reading

Introduction to Dotty

Reading Time: 3 minutes Dotty is the new scala compiler that 2.13 Scala release will be using. It is based on the DOT in its internal structure. The calculus used in Dotty is same as that of DOT. Dotty is a faster compiler than the scala compiler that Scala 2 uses. In this blog, I’ll be discussing the advantages of dotty, its architecture and the features that have been Continue Reading

Scala-Days-Berlin-2018-Knoldus-booth

Top five Reasons to visit our Booth #Knoldus at Scala Days, Berlin -2018.

Reading Time: 2 minutes The Knoldus team is super excited to be at Scala Days, Berlin – 2018, and we look forward to it as happy and enthusiastic as every time. This year’s conference is happening @ Kosmos Cinemas from May 14-17, 2018. Knoldus, being a Gold sponsor of Scala Days 2018, is proud and delighted to host a booth in the interest of showcasing our strength and expertise Continue Reading