No.
$ irb -r set
1.9.3p125 :001 > set = ObjectSpace.each_object(Set).to_set
=> #<Set: {#<Set: {...}>}>
1.9.3p125 :002 > set.include?(set)
=> false
However, the Enumeration of all Enumerations does contain itself.
1.9.3p125 :001 > e = ObjectSpace.each_object(Enumerator) => #<Enumerator: ObjectSpace:each_object(Enumerator)> 1.9.3p125 :002 > e.include?(e) => true
Why this is so is left as an exercise to the reader.
Standup Retrospective
1 week from today at lunchtime (3/15/2012 12:30)
Do I Really Need jquery-ujs.js
If I’m never going to do a remote form do I still need it?
RAILS_ENV for JavaScript project
Need a way to differentiate between development/production environments.
Thought about using hostname, ie localhost vs another hostname
EC2
EC2 now supports 64bit instances for all instance types
No new faces today
What is the approved way of finding out if a migration is pending? Trying to avoid Heroku restart.
Heroku + submodule: .slugignore is your friend!
Onsi says:
Heroku supports git submodules! However, when building your slugs it includes the
.gitdirectory in your submodules. This unnecessarily inflates the slug’s size. To circumvent this make a.slugignorefile in your app’s root directory addpath/to/submodule/.gitto it. You can also use.slugignoreto ignore specs, docs, etc…
Rachel Bobbins – new intern
Web 2 App – is there a service to mobile-optimise web sites?
There are many
Rubymine and Spork issue: when starting Spork from Rubymine, Rubymine doesn’t format test output correctly
The solution currently in use is to add a RUBYMINE_HOME path to the bash profile:
export RUBYMINE_HOME=/Applications/RubyMine.app/
And also the following block to a file loaded by spec_helper.rb (ex: YOUR_PROJECT/spec/support/rubymine.rb )
if ENV['RUBYMINE_HOME']
$:.unshift(File.expand_path('rb/testing/patch/common', ENV['RUBYMINE_HOME']))
$:.unshift(File.expand_path('rb/testing/patch/bdd', ENV['RUBYMINE_HOME']))
end
caveat: It may be necessary to launch Rubymine from a terminal with the mine command, rather than from the Dock or Spotlight, because variables set in .bash_profile normally apply only to the terminal environment in Mac OS X. See: Runtime Configuration Library: Environment Variables
No new faces today.
“MongoMapper v. Mongoid v. Candy v. etc…? Which should I use?”
A1: Don’t use a mapper at all, just interact with MongoDB directly. If you use a mapper, choose a library that’s least like Active Record.
A2: We used MongoMapper and it worked out okay. It doesn’t behave like Active Record in some ways, but it wasn’t a huge problem.
A3: We had to fight against Mongoid, since it only provided a subset of what Active Record provides and it didn’t provide some MongoDB specific things.
“Does anyone have experience with the awesome nested set library? Nested set is getting corrupted when storing information in a tree”
No answers from the crowd.
A heads up: Rails XSS – two patches were released, but one doesn’t work for Rails 2.
There’s a cool Blabs out about running jasmine in the background @ full speed. Check it out!
Subscribe to the Pivotal Blabs RSS feed!
David, Mark, and Melinda are here from a client.
Kyle is interviewing.
“Simple form translates labels. How do we get this to work in nested models?”
Check yesterday’s email for answers.
“Dev Bootcamp is teaching people how to program, the Pivotal way. They’re looking for mentors – contact Will if you’re interested. Also, Sarah is going to visit them tomorrow (Thurs) over lunch. Let her know if you want to tag along.”
- Does anyone know how to integrate with Google analytics using Garb (Google Analytics for Ruby). Jonathan would love to chat with you.*
- Is there a commonly accepted javascript date library? *
Check out strf-time.js; it’s an easy way to format dates and times. It doesn’t respond to daylight savings time in the right way, though, so watch out for that.
Also, Date.js (but it might fight with ember)
- Does anyone know of a good worker system? *
Simple worker is one option. Others?
*Get your time in!
*Gold conference room is now totally hooked up. Please don’t play around with the cables yourself.
*Brown bag lunches will be on Tuesday, starting next week.
*JSHint got pulled from RubyGems, so point your Gemfile to its github account instead.
Elliot is here today
“How can I place stuff over flash plugins in the DOM? (z-index problem)”
You can place iframes on top of the flash plugin, or set the transparent attribute on the flash elements to true. There should also be a jQuery plugin that handles this.
*”ActiveRecord has three methods to determine the number of records: #count, #length, and #size. Which one should we use when?”
As a general rule, always use #size. It checks to see if the recordset has been loaded and if so returns the number of records. Otherwise it hits the database with a count query. The #count method will query the database every time when it’s called on an ActiveRecord scope. The #length method is proxied through to the array of the result set, so every time you call that all the records are pulled from the DB and instantiated.
*”We’re using pow in development and it’s pretty good except sometimes we see 12 second delays in serving assets. Has anyone else encountered this?”
Quite mysterious. Perhaps updating to the Pow 4.0 beta release might help.
Is WebOS dead? This question can be answered at iswebosdeadyet.com. Enyo, the UIKit and data-management layer used in HP’s WebOS, is now available for other webkit browsers. It works with PhoneGap and applications based on Enyo are already in the pipeline for iOS and Android.
Webrick when used in development with the Rails Asset Pipeline appears to truncate large CSS files. The general consensus was “Don’t use Webrick” with shoutouts given to unicorn, mongrel, passenger(standalone) and pow.
How to scrub production data