Ruby On Rails

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Rebuilding Git in Ruby

Rebuilding Git in Ruby Git is a distributed version control system (DVCS) that we use every day to manage our code. It is a powerful tool but have you ever wondered how it works its magic? The Git internal docs can be intimidating, incomplete, and don’t have examples. D...

Writing a Unix Shell in Ruby

Writing a Unix Shell in Ruby It has to read input from STDIN, spawn processes requested from users, send signals to processes based on input, connect processes together with pipes, and provide a scripting environment for programmers to get work done.

Writing a Ruby Compiler From Scratch

Writing a Ruby Compiler From Scratch We build a small compiler out of the standard components: a tokenizer, a parser, and a code generator. By the end, we successfully compile some code in our language, producing JavaScript output that we can execute. Most compilers are highly optimi...

Building a simple websockets server from scratch in Ruby

Building a simple websockets server from scratch in Ruby What exactly are websockets? How do they work? In this post we're going to answer these questions by building a simple WebSocket server from scratch in.

How to write a template engine in less than 30 lines of code

How to write a template engine in less than 30 lines of code Template engines are really simple once you look inside.

InvoicePrinter 1.2 – Notes to self

InvoicePrinter 1.2 – Notes to self A new version of my Ruby gem for generating PDF invoices InvoicePrinter is out! This time bringing in a bundled server that can be handy for applications not running on Ruby.

CI/CD: How to Build an Effective Initial Deployment Pipeline

CI/CD: How to Build an Effective Initial Deployment Pipeline With this GitLab CI/CD deployment pipeline configuration, every push is tested, the master branch is deployed to staging servers with a fresh database dump from the production server, and versioned tags are deployed to production with backups and ...

Ruby’s New Exception Keyword Arguments

Ruby’s New Exception Keyword Arguments In Ruby 2.6, a variety of Kernel methods get a new exception: false or exception: true keyword argument. When Kernel methods fail, some raise an error and some just return nil. This new feature.

Programming Cryptocurrencies and Blockchains (Book Edition)

Programming Cryptocurrencies and Blockchains (Book Edition) What’s Blockchain?It’s a list (chain) of blocks linked and secured by digital fingerprints (also known as crypto hashes).

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