to_proc

        # Enumerator::Yielder.to_proc

(from ruby core)
### Implementation from Yielder
---
    to_proc()

---

Returns a Proc object that takes arguments and yields them.

This method is implemented so that a Yielder object can be directly
passed to another method as a block argument.

    enum = Enumerator.new { |y|
      Dir.glob("*.rb") { |file|
        File.open(file) { |f| f.each_line(&y) }
      }
    }