First steps with Go linters

Linter is a static code analysis tool used to find programming errors, bugs, leaks of code standards, and even security flaws. These tools help developers because they save time by identifying issues before they happen in the production environment. It also keeps developers from unnecessarily checking if your colleague used the team standards. Each programming language has their own tools: Ruby has Rubocop , JS has Eslint , and Go can’t be different. [Read More]

Introduction to templating with Go

Computer and programming languages were born to make our lives easier, as they automatize day-to-day tasks. Programmers and software engineers usually have to build files that are almost the same as others, where the only change is one field or another. For example, there are configuration files, invoices, XMLs, HTMLs or any file which we can use to build other files. There is a simple solution for this problem: we can create a template and change the parts that I need manually! [Read More]

Writing Kong plugins with Go

The Kong, quoting its own documentation , is an open-source API gateway, cloud-native, platform-agnostic, scalable API Gateway distinguished for its high performance and extensibility via plugins. Kong has a lot of official plugins that allow us to customize what we need, and when there aren’t any available, you can build your own. The default language for building plugins its Lua, but other languages are supported, including Go. I don’t have much experience writing code with Lua, so using Go allows me a higher development speed and quality on my plugins. [Read More]

Introduction to Concurrency in Go

One of the best Go features is how easy we can use concurrency. The language gives us goroutines, which are like lightweight threads managed by the Go runtime. It help us to run several functions at the same instant and is very helpful if you wish to improve the performance of your application. Using this feature is easy as adding the go keyword before any function call. This will make the function run concurrently. [Read More]

RSA in Ruby for beginners

Introdução RSA is a public/private encryption algorithm and it is based on the difficulty of the factorization of the product of two large prime numbers. It was named after its creators Rivest, Shamir, and Adleman. It is an expensive algorithm, computationally speaking, and because of this, it is not common to use it directly, but it is still widely used in the market and is one of the most important encryption algorithms. [Read More]

Implementing the Caesar Cipher in Ruby

Caesar cipher is the simplest and most widely known encryption technique. It is also known as Caesar’s cipher, shift cipher, Caesar’s code, Caesar shift, or ROT N (ROT13 is the most famous one, shifting letters by 13). It is very simple because it just works for letters between A and Z, ignoring all special characters, such as dots, whitespaces, question marks, and special letters, like Ç or Á. Starting our implementation, we need to create a class that will know what we want to cipher and how many rotations we will do. [Read More]