Knoldus Blogs

How to write Clean Code- Part2

May 4, 2020Java, Scala, Tech BlogsClean code

Reading Time: 3 minutes In our previous blog, we discussed some of the tips to write clean code. However, those are not just enough for better programming. Instead, there are some points to take care which helps in writing more better code. And, here in part 2, we will majorly focus on those points which were not been covered in Part1 such as Exception Handling, Data Structures & Unit Continue Reading

Coding Best practices to follow with Scala

March 25, 2019March 25, 2019ScalaBest Practices, Clean code, scala

Reading Time: 4 minutes If you are reading this blog there may be two reasons. First, you are the programmer and second, you want to be a better programmer. So here we go, Even bad code can function, But if the code isn’t clean, it can bring a development organization to its knees. Every year, countless hours and significant resources are lost because of the poorly written code. But Continue Reading

The Law of Demeter

June 26, 2018June 29, 2018Java, ScalaClean code, Code conventions, Code Quality, Demeter Law, Law of demeter, Object oriented, Robert C. Martin

Reading Time: 3 minutes You’ll often get to hear from good programmers about having “loosely coupled” classes. What do they mean by saying that? Let’s understand this first before jumping onto the Law of Demeter. Loosely Coupled In object-oriented design, the amount of coupling refers to how much the design of one class depends on the design of another class. In other words, how often do changes in class

Do you think your code is Perfect? Well, Think again.

June 26, 2018June 26, 2018Java, Scala, software, TestingBest Practices, Clean code, java, programming, scala, Unit Testing

Reading Time: 8 minutes “Any fool can write code that a computer can understand. Good programmers write code that humans can understand.” – Martin Fowler “I can code.” I always say to myself. But do others think the same? Is my code good enough for people to understand? Do other people think “Damn I wish I could write such code.?” – that’s the main question I always had in Continue Reading

Clean Code – Robert C. Martin’s Way

June 23, 2018June 26, 2018Java, ScalaClean code, CodeQuality, java, scala

Reading Time: 7 minutes Writing good code in accordance with all the best practices is often overrated. But is it really? Writing good and clean code is just like good habits which will come with time and practice. We always give excuses to continue with our patent non-efficient bad code. Reasons like no time for best practices, meeting the deadlines, angry boss, tired of the project etc. Most of Continue Reading

SOLID Principles: Basic building block of the software system

May 24, 2018August 9, 2018ArchitectureBest Practices, Clean code, solid principles

Reading Time: 4 minutes “Good software system begins with clean code” and by “clean code”, I mean it is code that is easy to understand and easy to change. This is the point where there is a need to know about SOLID Principles which helps us in writing the clean code as the code is like humour. “When you have to explain it, it’s bad.” The SOLID PRINCIPLES tell Continue Reading

Creating a DSL (Domain Specific Language) using ANTLR ( Part-II) : Writing the Grammar file.

May 4, 2016May 4, 2016Agile, Scalaantlr, Clean code, compiler, domain, domain specific language, dsl, grammar, lexer, parser, scala, visitor

Reading Time: 3 minutes Earlier we discussed in our blog how to configure the ANTLR plugin for the intellij for getting started with our language. In this post we will discuss the basics of the ANTLR and exactly how can we get started with our main goal. What is the lexer, parser and what are their roles and many other things. So lets get started, Antlr stands for ANother Continue Reading

Domain Driven Design with Scala

December 25, 2015ScalaClean code, Code Quality, scala

Reading Time: < 1 minute The benefits of DDD have been elucidated multiple times. For us, at Knoldus, we want to make sure that quality of software developed goes a long way. More than 70% of the cost of the software is spent in the maintenance of the software and hence it becomes absolutely essential that a good amount of time is spent in making the right software right. The Continue Reading

Lenses and their use case : Scalaz.Lens, QuickLens, Sauron

September 21, 2015ScalaClean code, functional programing, scala

Reading Time: < 1 minute Functional way of updating Complex nested objects

Getting started with ReactJS, Play 2.4.x, Scala, Anorm and WebJars

July 19, 2015AJAX, Akka, Bootstrap, CSS, Future, JavaScript, jQuery, Play 2.4.X, Play Framework, React, Reactive Application, ReactJS, Scala, TutorialAjax, Anorm, application, Bootstrap, Clean code, Code Quality, Eclipse, functional programing, Javascript, jquery, JSON, play, Play framework, Public Cloud, React, ReactJs, sbt, scala, UI, Web, WebJars

Reading Time: 2 minutes playing-reactjs This blog describes a basic example to render UI using React(A JavaScript library for building user interfaces) with Play 2.4.x, Scala, Anorm and WebJars. It also demonstrates the use of evolution in Play 2.4.x This is a classic CRUD application, backed by a JDBC database. It demonstrates: Handling asynchronous results, Handling time-outs Achieving, Futures to use more idiomatic error handling. Accessing a JDBC database, Continue Reading

Mastering in Frontend : Getting Into Concepts – Part 1

July 13, 2015June 13, 2018ScalaAjax, angularJs, BackboneJs, BoneJs, Clean code, Code Samples, Comparison, Controller, Design Pattern, frontend, Introduction, jquery, JSON, KnockoutJs, Library, Model, MVC, MVVM, PaperJs, performance, Play framework, ReactJs, View, Wrapper

Reading Time: 5 minutes All about AnguarJs, ReactJs, BackboneJs, JQuery and other libraries, from the intro to the actual concept.

Play 2.4.X : Microservice Architecture using Play and Scala

June 15, 2015Architecture, Microservices, Play 2.4.X, Play Framework, Scala, Web, Web ServicesAmazon EC2, Architecture, Clean code, Code Quality, Microservice architecture design, Microservices, Multi Project Builds, play, Play framework, REST, sbt, scala, Testing, Web

Reading Time: < 1 minute Playing-Microservices This blog describes a basic Microservice architecture design using Play 2.4.X and Scala. The big idea behind microservices is to architect large, complex and long-lived applications as a set of cohesive services that evolve over time. The term microservices strongly suggests that the services should be small. In short, the microservice architectural style is an approach to developing a single application as a suite Continue Reading

Play 2.3.x PDF : Basic example for generating PDF documents dynamically from Play Application with the help of play2-pdf module

May 20, 2015May 20, 2015Bootstrap, CSS, Play Framework, Play2-PDF, WebBootstrap, Clean code, Code Quality, play, Play Application, Play framework, Play Framework module, Play2-PDF, scala, Web, Web Application, WebJars

Reading Time: 2 minutes In this blog I have created a basic example for generating PDF documents dynamically from Play Application with the help of play2-pdf module Play 2.3.x PDF module: This module helps generating PDF documents dynamically from your Play! web application. It simply renders your HTML- and CSS-based templates to PDF. It is based on the Flying Saucer library, which in turn uses iText for PDF generation. Continue Reading

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