method

initialize!

rails latest stable - Class: Rails::Application

initialize!(group = :default)

public

Initialize the application passing the given group. By default, the group is :default

# File railties/lib/rails/application.rb, line 424
    def initialize!(group = :default) # :nodoc:
      raise "Application has been already initialized." if @initialized
      run_initializers(group, self)
      @initialized = true
      self
    end

initialize!

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