Hey folks, In this blog we are going to find out the correlation of categorical variables.

In statistics, a categorical variable has two or more categories.
But there is no intrinsic ordering to the categories.

For example, a binary variable(such as yes/no question) is a categorical variable having two categories (yes or no), and there is no intrinsic ordering to the categories.

Categorical variables represent types of data that may be divided into groups.
Examples of categorical variables are race, sex, age, group, and educational level.

Correlation is a statistical measure that expresses the extent to which two variables are…

Akka, a free open source toolkit simplifying the construction of concurrent and distributed systems/applications. In this blog, we are gonna discuss Testing the Akka Actors Synchronously.

Usually, we people say that testing the Akka Actors is a bit confusing and tricky too, but it isn’t. Coming to the types of testing in Akka Toolkit, we have two types of testing i.e. Synchronous Testing and Asynchronous testing. It’s just like we have Unit and Integration testing in Scala.

  1. Synchronous testing → These are unit testing where we don’t need any ActorSystem, we can directly test the receive method.
  2. Asynchronous Testing →…

I’ve already discussed the basic structure of the Lagom in my previous blog and also I’ve shared a full-fledged small Lagom service in that.

So, in this blog, I’m telling how you can consume a separate micro-service that is running separately. Or in other words, simply want to call/invoke another service’s descriptor’s method in your service. I am also describing in this how you can run two or more different micro-services in the local machine only using Lagom.

The first necessary step to consume another service is to attach its descriptor’s class in your project because the service descriptor includes…


In this blog, we’ll be understand about akka streams and its components. Also, we’ll do a simple exercise that involves each of these components.

A stream is a flow of data that involves moving and transforming data. An element is the processing unit of the stream.

In software development, there can be cases where we need to handle the potentially large amount of data. So while handling these kinds of scenarios there can be issues such as out of memory exceptions. So we should divide the data in chunks and handle the chunks independently. …

An embedded system is computer hardware with software embedded in it. Or we can say it is a combination of computer processors, computer memory, and input/output devices and it can be an independent system or a part of a large system.

Hi folks, we are back again with another interesting article where we’ll understand the use-cases of Magnetometer sensor and how to extract readings of this sensor from STM32F3 discovery board.
Alright!!! let’s get started to update our knowledge pool by adding one more interesting row in it.

As we all know, embedded will be the future. Even today also…

Carpooling Chain is a decentralized blockchain solution built with the objective of eliminating the need for a central authority to book cabs. The blockchain backend for Carpooling chain is build using Substrate. Substrate is a next-generation framework for blockchain innovation. It comes with everything you need to build your blockchain.

Substrate is a completely free and open-source project. It is built using Rust and WebAssembly. Rust is designed for creating fast and inherently safe software.

A Web element is an individual entity rendered on a Web page. Whatever you see one a web page whether it is a button or a title header or input fields is a webelement. Suppose you have opened the search page of google, whatever you see there like the title or the search box they all are elements. Elements are specified in HTML by attributes, tag name like <p>,<img> etc, and contents. Most of the time we apply css to the elements to style them with colors, size , animation, position etc.

<start tag> content </end tag>

Hi Readers, In this blog we will see how we can test our Terraform code that it applies all the infrastructure as per stated in the code.

Terratest is a Go library developed at Gruntwork, that makes it easier to write automated tests for our infrastructure code.

It provides a variety of helper functions and patterns for common infrastructure testing tasks but here we will be discussing about Testing Terraform code. For other helper functions and patterns, see this.

However for understanding how terraform works you can see previous blogs.

Terratest uses Go testing framework. To use terratest we would…

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