| /** | |
| * The following preprocessor macros can be used to adopt the new nullability annotations and generics | |
| * features available in Xcode 7, while maintaining backwards compatibility with earlier versions of | |
| * Xcode that do not support these features. | |
| */ | |
| #if __has_feature(nullability) | |
| # define __ASSUME_NONNULL_BEGIN NS_ASSUME_NONNULL_BEGIN | |
| # define __ASSUME_NONNULL_END NS_ASSUME_NONNULL_END | |
| # define __NULLABLE nullable |
When hosting our web applications, we often have one public IP
address (i.e., an IP address visible to the outside world)
using which we want to host multiple web apps. For example, one
may wants to host three different web apps respectively for
example1.com, example2.com, and example1.com/images on
the same machine using a single IP address.
How can we do that? Well, the good news is Internet browsers
On the Refinery29 Mobile Web Team, codenamed "Bicycle", all of our unit tests are written using Jasmine, an awesome BDD library written by Pivotal Labs. We recently switched how we set up data for tests from declaring and assigning to closures, to assigning properties to each test case's this object, and we've seen some awesome benefits from doing such.
Up until recently, a typical unit test for us looked something like this:
describe('views.Card', function() {
| /** | |
| * Helvetica Neue Normal (No Stretch) | |
| */ | |
| /* Helvetica Neue Black Font Stack */ | |
| .{font-family: "HelveticaNeueBlack", "HelveticaNeue-Black", "Helvetica Neue Black", "HelveticaNeue", "Helvetica Neue", 'TeXGyreHerosBold', "Arial Black", sans-serif; font-weight:800; font-stretch:normal;} | |
| /* Helvetica Neue Heavy Font Stack */ | |
| .{font-family: "HelveticaNeueHeavy", "HelveticaNeue-Heavy", "Helvetica Neue Heavy", "HelveticaNeue", "Helvetica Neue", 'TeXGyreHerosBold', "Arial Black", sans-serif; font-weight:700; font-stretch:normal;} |
Originally published in June 2008
When hiring Ruby on Rails programmers, knowing the right questions to ask during an interview was a real challenge for me at first. In 30 minutes or less, it's difficult to get a solid read on a candidate's skill set without looking at code they've previously written. And in the corporate/enterprise world, I often don't have access to their previous work.
To ensure we hired competent ruby developers at my last job, I created a list of 15 ruby questions -- a ruby measuring stick if you will -- to select the cream of the crop that walked through our doors.
Candidates will typically give you a range of responses based on their experience and personality. So it's up to you to decide the correctness of their answer.
Be able to push to Heroku as any of three Heroku users from a single computer and a single user.
For this, you will not be allowed to copy and paste anything - except SSH keys themselves, because we're not THAT evil.
If you get error messages, read them carefully, and make note of what you understand, what you don't understand, and what you think you understand.
| Model.new.foo |
| # Sample implementation of quicksort and mergesort in ruby | |
| # Both algorithm sort in O(n * lg(n)) time | |
| # Quicksort works inplace, where mergesort works in a new array | |
| def quicksort(array, from=0, to=nil) | |
| if to == nil | |
| # Sort the whole array, by default | |
| to = array.count - 1 | |
| end |
