What does class_eval <<-“end_eval”, __FILE__, __LINE__ mean in Ruby?

Question

I\'m learning how to use class_eval in modules (I\'m somewhat familiar with class_eval) and came across this helpful class in resource_controller. In there they have things

Answer 1

The << is the start of a heredoc. That line is the start of a multiline string. The string is evaled to create the function. The class_eval function uses the __FILE__ and __LINE__ to add debug information.