The default implementation of the UISplitViewController based template in Xcode does not provide a navigation controller stack in the detail view. Instead it is just a regular old view with a navigation bar at the top. I suppose there are cases when you might want such an implementation, however, i think you would more commonly want there to be a navigation stack for cases when you wan to push new view controllers for your users to see. In this post i intend to demonstrate how to convert the default template to something more useable.
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In celebration of the late notice of WWDC this year; CIMGF is offering late notice on our T-shirts!

In previous years I took orders and then delivered them to you at WWDC. I discovered something from that it. It was a huge pita for everyone involved. Therefore, this year I am going to do it differently.

I have created a storefront on SpreadShirt where you can order one of several different T-shirts (and a jacket) for this year’s WWDC. The new shirts include the new CIMGF logo which will soon adorn this beloved site.

I hope to see many of you wearing the T-Shirts this year in San Francisco!

I have posted and discussed this file a few times but as with all things it has been touched, tweaked, and generally improved upon.

In this article we will discuss the latest iteration of my `Prefix.pch` file. As with anything I post, it is available for you to use as you see fit.

## The File

For those who don’t want to read the entire post, here is the file:

#ifdef DEBUG
  #define DLog(...) NSLog(@"%s %@", __PRETTY_FUNCTION__, [NSString stringWithFormat:__VA_ARGS__])
  #define ALog(...) [[NSAssertionHandler currentHandler] handleFailureInFunction:[NSString stringWithCString:__PRETTY_FUNCTION__ encoding:NSUTF8StringEncoding] file:[NSString stringWithCString:__FILE__ encoding:NSUTF8StringEncoding] lineNumber:__LINE__ description:__VA_ARGS__]
#else
  #define DLog(...) do { } while (0)
  #ifndef NS_BLOCK_ASSERTIONS
    #define NS_BLOCK_ASSERTIONS
  #endif
  #define ALog(...) NSLog(@"%s %@", __PRETTY_FUNCTION__, [NSString stringWithFormat:__VA_ARGS__])
#endif

#define ZAssert(condition, ...) do { if (!(condition)) { ALog(__VA_ARGS__); }} while(0)

This does not *replace* the Prefix.pch that comes with your project but it does go at the top of every project that I work on. The rest of this post we will review what this does.
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