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Property/Synthesize difference between debug and release

Posted on 2010-08-12
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Last Modified: 2013-12-26
I'm declaring a property in my *.h file:

@property NSString * URL;

I add a "Synthesize" in my *.m file:

@synthesize URL;

Building and running in debug works fine. Making use of it and it seems healthy. Building release mode yields an error:  synthesized property 'URL' must either be named the same as a compatible ivar or must explicitly name an ivar

what am I doing wrong?



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Question by:ronenmagid1
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pgnatyuk earned 500 total points
ID: 33423139
Seems like you make programs for Mac OS X and not for iPhone. I'm really glad. :)

You wrote:
@property NSString * URL;

so everything is by default: readwrite and assing are the attributes, the setter and the getter will be generated and will have URL and setURL names.
http://developer.apple.com/mac/library/documentation/Cocoa/Conceptual/ObjectiveC/Articles/ocProperties.html#//apple_ref/doc/uid/TP30001163-CH17-SW2

For NSString, I'd use retain or copy, but not assign. At least it is so for a common case.

The answer: the release configuration is 32-bit. The debug is 64 bit and so you can declare the property (it works so since Xcode 3.2.2?). For the 32-bit version we have to declare a variable and then the property. So for a test,  add NSString* URL into the class. If the project will be compiled in debug and release, so I'm right.
 
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by:ronenmagid1
ID: 33423242
yep. thanks!
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by:pgnatyuk
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You are welcome.

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