Ruby Motion

IOS with the Power of Ruby

Aaron Renner / @bayfieldcoder
Animas Code Labs

Why it's Cool

  • Harness power of Ruby
  • Can use Objective-C directly
  • Do more with less
  • Wrappers

How it works


Power of Ruby

Objective C

NSMutableArray *arr = [NSMutableArray withObjects:@"Durango",@"Bayfield", nil];
[arr addObject:@"Pagosa Springs"]

NSArray *sortedArray = [anArray sortedArrayUsingSelector:@selector(localizedCaseInsensitiveCompare:)];

Ruby

(main)> arr = ["Durango", "Bayfield"]
=> ["Durango", "Bayfield"]
(main)> arr << "Pagosa Springs"
=> ["Durango", "Bayfield", "Pagosa Springs"]
(main)> arr.sort
=> ["Bayfield", "Durango", "Pagosa Springs"]

How it Translates

(main)> "Hello World".class.ancestors=> [String, NSMutableString, NSString, Comparable, NSObject, Kernel]
(main)> ["Durango", "Bayfield"].class.ancestors
=> [Array, NSMutableArray, NSArray, Enumerable, NSObject, Kernel]

Objective C to Ruby

Objective C

#import "AppDelegate.h"
@implementation AppDelegate - (BOOL)application:(UIApplication *)application
  didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{   
    UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"Durango Coders"
                                        message:@"Welcome to ObjectiveC"
                                        delegate:nil
                                        cancelButtonTitle:@"Let's Code"
                                        otherButtonTitles: nil];
    [alert show];
    
    return YES;
}@end

Objective C to Ruby

Ruby

 class AppDelegate
  def application(application, didFinishLaunchingWithOptions:launchOptions)
    @alert = UIAlertView.alloc.initWithTitle("Durango Coders",
                                   message: "Welcome to Ruby Motion",
                                   delegate: nil,
                                   cancelButtonTitle: "Let's Code",
                                   otherButtonTitles: nil)
    @alert.show
    true
  end
end

Wrappers

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