Rootstrap Blog

Recommendation Systems: How Suggestion Algorithms Work

Oftentimes, we are surprised by the accuracy of recommendations on what to buy on Amazon, watch on Netflix, or listen on Spotify. We feel that somehow these companies know how our brain works and monetizing this magical guessing game. They have a deep foundation on behavioral sciences, and our job

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How to Improve Maintainability in Rails Applications Using Patterns. Part I

Introduction Software is constantly evolving, both in specification and implementation. Keeping an extensible and maintainable codebase is therefore crucial in order to deal with these changes quickly and easily. Ruby on Rails comes with a lot of good techniques and patterns out of the box that facilitate this. Nevertheless, some

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Scope functions in Kotlin

The Kotlin standard library contains several functions whose sole purpose is to execute a block of code within the context of an object. When you call such a function on an object with a lambda expression provided, it forms a temporary scope. In this scope, you can access the object

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