map

Merge Lists of Map to Map, Java 8 Style!

Java, Tech Blogs, , , , , ,

Reading Time: 3 minutes Today, while doing my work and having fun programming, I came across a problem that looked pretty easy in the beginning, but after starting doing it, had to take help of Google and read from different sites to get to a nice implementation. So, let’s look at the problem and how to solve it. The Problem Well, you guys probably already have guessed what the Continue Reading

map(), flatMap() on Futures & Options in scala

Future, Scala, , , , ,

Reading Time: 5 minutes In this blog, we would be looking at how map() and flatMap() operations work with Option and Future of scala, literally speaking both Futures and Options are very effective features of scala, A Future lets us have a value from some task on a differnt thread and Option provides us a hand from null of java as using null in scala is seen a very bad approach in Continue Reading

Knolx: The Hidden Mystery Behind Scala Functional Programming

Functional Programming, Scala, , , , , , , , , , , ,

Reading Time: < 1 minute Hello everyone, Knoldus organized a session on 25th January 2018. The topic was “The Hidden Mystery Behind Scala Functional Programming”. Many people attended and enjoyed the session. In this blog post, I am going to share the slides & video of the session. Slides:

Back2Basics: For Expression Served From Scala Magic Box – I.

Functional Programming, Java, Scala, , , , , , , , , ,

Reading Time: 3 minutes In Scala, lots of the things are kind of a magic for Java developers. Sometimes this magic amazes the code but sometimes it has ruined the developer’s life. Today we are going to discuss one of the magic called “For Expression“, “For Comprehension” or as per Java developers like me called “For Loop“. Scala developers familiar with for comprehension and most of them have the idea, Continue Reading

Scala Map

Scala, , ,

Reading Time: 6 minutes Scala Map is a collection of Key-value pair. A map cannot have duplicate keys but different keys can have same values i.e keys are unique whereas values can be duplicate. Maps in Scala are not language syntax. They are library abstractions that you can extend and adapt. Scala provides mutable and immutable alternatives for maps. Class hierarchy for scala maps is shown below:   Image Continue Reading

Functors in Scala

Scala, , , , ,

Reading Time: 2 minutes While programming in Scala we  often come across a term called Functor. A functor is an extremely simple but powerful concept. In this blog, let us discuss that in more detail. Theoretically functor is a type of mapping between categories. Given two categories A and B, a functor F maps the objects or entities of A to objects or entities of B. We can simply call Continue Reading

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