On Jun 23, 2014, at 11:38 AM, Sean McBride wrote:

> Hi all,
> 
> The Obj-C designated initializer rules say that if a subclass creates a new 
> designated initializer that its implementation must call (one of) the 
> superclass' designated initializer.
> 
> The docs for NSWindowController say initWithWindow: is the (only) designated 
> initializer.
> 
> Countless examples of NSWindowController subclassing, like Apple's Sketch 
> sample code:
> 
> <https://developer.apple.com/library/mac/samplecode/Sketch/Listings/SKTWindowController_m.html>
> 
> do this:
> 
> - (id)init { 
>    // Do the regular Cocoa thing, specifying a particular nib.
>    self = [super initWithWindowNibName:@"DrawWindow"];
> }
> 
> So there seems to be a contradiction here... Are the docs just omitting that 
> initWithWindowNibName: is in fact a secondary designated initializer? 


My understanding of Objective-C convention rules is that *every* initializer 
*should* call the designated initializer, and that the API follows this 
convention, unless documented otherwise...

Keary Suska
Esoteritech, Inc.
"Demystifying technology for your home or business"


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