yari-helm instead of yari-anything

22_ruby.el

(defvar yari-helm-source-ri-pages
  '((name . "RI documentation")
    (candidates . (lambda () (yari-ruby-obarray)))
    (action  ("Show with Yari" . yari))
    (candidate-number-limit . 300)
    (requires-pattern . 2)
    "Source for completing RI documentation."))

(defun yari-helm (&optional rehash)
  (interactive (list current-prefix-arg))
  (when current-prefix-arg (yari-ruby-obarray rehash))
  (helm :sources 'yari-helm-source-ri-pages :buffer "*yari*"))