nested_error.rb

NestedError

An exception class that records the cause of another error. Useful when you need to raise a general kind of error, yet still be able to determine the underlying cause.

Example:

  class MyGeneralError < NestedError; end

  begin
    begin
      # Cause a specific error
      1/0 # Divide by zero error
    rescue Exception => e
      # Wrap the specific error in a general, nested error
      raise MyGeneralError("Something bad happened!", e)
    end
  rescue MyGeneralError => e
    # Intercept the nested error and inspect the cause
    puts e.message # => "Something bad happened!"
    puts e.cause.message # => "divided by 0"
  end