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file.rb

This Ruby code snippet demonstrates how to use the require method to load a module or library within a Ruby program. The require method takes the path of the file as an argument, and loads the contents of that file into the current program. In this case, we are loading the json gem, which is a standard library in Ruby, by requiring its file path.

require 'json'

The json gem provides functions for working with JSON data structures in Ruby, such as parsing and generating JSON strings. By requiring the json gem, we can use these functions within our program to work with JSON data.

Additional Note

__FILE__ in Ruby is a predefined constant that represents the current file’s name. It returns a string with the name of the file in which it is used.

Ruby code snippet

__FILE__
#=> "(irb)"

Executed with Ruby 3.4.4.