If you want to get a deep understanding of how closures, blocks, procs & lambdas in Ruby work, check out the...
Although you can access many symbols using the AltGr key you may be missing some, like the en-dash (–) or...
A while ago we were working on an application that had an entire version specially created for mobiles, such as...
Note: For PostgreSQL you should use advisory locks. For MySQL we still recommend the solution in this card.
Paperclip uses the imagemagick resize options like 100x50> , 100x50<, 100x50# etc to resize images. See the link what options are...
What are Google’s plans for turning WebM into a genuinely open standard, one that is based on consensus like...
To test whether two arrays have the same elements regardless of order, you can use the =~ matcher in RSpec < 2.11...
If you find yourself working in the Adobe Flash IDE you're already doing it wrong, but maybe the hour...
If you run specs or your application and get an error like: ActionController::MissingFile in 'ProductsController#show, should render PDF...
You know Firebug as a Firefox extension but there is also a "Lite" version which runs purely off JavaScript.
When defining a trait using the Modularity gem, you must take extra steps to define constants to avoid caveats (like...
In case https://www.rubydoc.info/ is to slow or offline, you can also read a gem documentation offline. Start a server...
Update: This trick probably isn't very useful anymore in Ruby 2.x. The Ruby GC has improved a lot...
In January this year (2010), Gmail switched to using HTTPS for everything by default. Previously it had been introduced as...
If you’re testing the behavior of deprecated code in your Ruby project, the warning messages littered throughout your spec...
Git allows you to do a binary search across commits to hunt down the commit that introduced a bug.
If you need to find out which of your local commits are not on the remote server do this:
I was recently confronted with the task of creating a two-column liquid layout with a header and footer in...
In RSpec 2 shared_examples_for can have parameters. You can simply hand over arguments from it_behaves...
When you need to see the content of a page (i.e. not all the HTML but the relevant text body...
You can usually just use the eq matched to compare two numbers: expect(deal.total).to eq(120)
When you eagerly load an association list using the .include option, and at the same time have a .where on...
RSpec 1, RSpec 2 To test whether two arrays have the same elements regardless of order, RSpec 1 and 2...
Deadlocks only occur if two transactions in separate threads compete for the same rows in the database. They usually (but...