Off course it is difficult to calculate the exact value of pi, but a simple approximation can be calculated by Monte Carlo methods.

Here is how I checked SHA-1 / SHA-256 finger prints from APK installed in devices.

In this article, I re-implement HashMap in order to cultivate my better understanding.

In some functional languages, such as Scala, Either and Option is provided.

Fig-1 The Deploy Flow Here I create a workflow of GitHub Actions like Fig-1.

In this article, I decode a Json, which received with Alamofire, to a struct conforming to Decodable protocol.

Here is a Shell Script to take a screenshot of Android devices.

The Fibonacci sequence is represented by the following incremental formula.

Implemented a calculator by Reverse Polish Notation with Kotlin.

Summary