What is Ruby Bundler and how do I use it?

What is Ruby Bundler and how do I use it?

Ruby Bundler is a tool that manages gem dependencies for Ruby applications. It ensures that the right versions of gems are used.

How do I install Bundler?

You can install Bundler by running the command gem install bundler in your terminal.

How do I create a Gemfile?

To create a Gemfile, simply create a new file named 'Gemfile' in your project directory and list your gem dependencies there.

Can you show me an example of a Gemfile?

Sure! Here's a simple example:

source 'https://rubygems.org'
gem 'rails', '~> 6.0'
gem 'pg'

This specifies that you want to use Rails version 6.0 and the PostgreSQL gem.