bq. Pry is a powerful alternative to the standard IRB shell for Ruby. It features syntax highlighting, a flexible plugin architecture, runtime invocation and source and documentation browsing.
The subtleties of pry alone make it an improvement over the vanilla IRB:
* Automatically paginate large return values
* Add syntax highlighting to return values
* Allow for easily hiding return values with ‘;’
But wait, there’s more! Try pry now and we’ll throw in:
* Easily execute shell commands with the . prefix
* Allow for history management with save and replay capabilities
* A powerful way of exploring your code using shell based ideas such as cd and ls
* Easy integration with Rails 2 or 3
* Remote connections coming soon
If you’re like me you want an example:
I do some playing around with “Gosu”:http://www.libgosu.org/, but I always forget the keyboard key constants.
In pry I can simply type:
pry(main)> cd Document.first/@attributes pry(#
):2> keys.sort => ["actual_finish_at", "actual_start_at", "adjusted_planned_finish_at", "adjusted_planned_start_at", ...
Or when working in a Rails console:
pry(main)> ls -c --grep Kb Gosu Kb0 Kb1 Kb2 Kb3 Kb4 Kb5 Kb6 Kb7 Kb8 Kb9 KbA KbB KbBackspace KbC KbD KbDelete KbDown KbE KbEnd KbEnter ...
For more in-depth examples check out the “rails cast”:http://railscasts.com/episodes/280-pry-with-rails and the “pry wiki”:https://github.com/pry/pry/wiki.