Immutable Objects Using Annotation In Groovy

In Groovy, it is possible to create an immutable using the groovy.transform.Immutable annotation. One possible use-case for this is when we want to create a object (with data initialized through the class constructor) that is passed to another application layer (e.g., service) but we don’t want that object modified in that layer.

Run Groovy Without Installing On Windows

This post demonstrates how to temporarily configure Groovy to run on Windows. This is useful when we are unable to add or modify environment variables in Windows due to restrictions.

Kotlin – val versus var

What is the difference between the keywords val and var in Kotlin? If you’re coming from Java, val refers to variable that cannot be updated after it has been assigned a value; while var is the usual writable variable whose value can always be changed by other codes.

Kotlin – Extension Functions

An Extension Function is a function that is attached to an existing class and are invoked like member functions. For this post, we are using Kotlin 1.1.