On Sun, Feb 22, 2015, at 12:11 PM, Jens Alfke wrote:
> 
> > On Feb 22, 2015, at 9:30 AM, Kyle Sluder <[email protected]> wrote:
> > 
> > The compiler does keep type info for properties, but that’s not actually 
> > documented.
> 
> It’s documented in the “Declared Properties” section of the “Objective-C
> Runtime Programming Guide”:
> 
>       You can use the property_getAttributes function to discover the name,
>       the @encode type string of a property, and other attributes of the 
> property.

The documented @encode format does not contain static type information
for ObjC types:
<https://developer.apple.com/library/mac/documentation/Cocoa/Conceptual/ObjCRuntimeGuide/Articles/ocrtTypeEncodings.html>

The fact that the string returned by property_getAttributes *does*
contain static type information is an undocumented extension.

--Kyle Sluder

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