Month: September 2017

Ruby has a << method used for array and string concatenation, affectionately called the “shovel operator.” It can also be used to add methods to a class, like so:

class MyClass
  class << self
    def print_foo
      puts 'foo'
    end
  end
end

MyClass.print_foo
# > foo

All the methods defined between class << self and end will be “self methods” on the Ruby object. (C# or Java would call them “static” methods; they belong to the class, not the instance.)

Anyway, defining constants inside the shovel operator works strangely. Continue reading “Constant shoveling” →