PostgreSQL’s LATERAL JOIN

PostgreSQL 9.3 introduced new kind of SQL join type that can be useful for solving problems that needed some more…

CoreData basics (Xcode 9 + Swift 4)

Basics of CoreData framework, which is a tool for iOS, macOS, tvOS…

Builder design pattern in Ruby

Builder pattern in Ruby is useful when the algorithm how to build an…

What skills should a junior Ruby on Rails developer have?

Facade design pattern in Ruby on Rails

We can use use Facade design pattern in Rub on Rails to remove…

Preventing security issues in Ruby on Rails (based on OWASP cheatsheet)

Best diet for developers

No, it’s not gonna be about pizza, burgers and fries. It’s not gonna be about cola and beer. And even it’s not…

How to pass PSM I certificate

Yesterday I passed PSM I exam and got my certificate (http://www.scrum.org/user/266898) 😎

How to create and publish Hex.pm package (Elixir)

How to be more productive by focusing on the right things (for programmers)