Re: Cocoa Scripting: property with multiple types

• Subject: Re: Cocoa Scripting: property with multiple types
• From: Dustin Voss <email@hidden>
• Date: Mon, 22 Aug 2005 20:01:52 -0700
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On 22 Aug 2005, at 9:02 AM, Mark Alldritt wrote:

Hi,

On a related note, if I want to return missing value for a property
that
normally returns an integer, boolean or string, how do I do this?

I still haven't heard whether this actually works, and I haven't
touched my own code in a long time, but maybe you can declare

    <value-type name="missing value" code="msng">
        <cocoa class="NSNull"/>
    </value-type>

in your sdef file and return [NSNull null] from the accessors.

Will this work with accessors that return scalar value (int, BOOL)? Surely,
returning [NSNull null] will be interpreted as TRUE for a BOOL accessor and
as an arbitrary integer for int accessors.