You have many options, in rough order of cleanness:
A) Declare a protocol that your objects conform to. Make -setOrdinal: @optional
B) Do [object performSelector:@selector(setOrdinal:) withObject:value] or use
-setValue:forKey:
C) Typecast the object to a class that is known to implement -setOrdinal:
On 26 Nov 2010, at 17:47, Mikkel Eide Eriksen wrote:
> I should have mentioned that it is declared, but obj can be one of many
> classes only some of which have setOrdinal:
>
> On Nov 26, 2010, at 6:46 PM, banane wrote:
>
>> declare the method in your header file. "-(void)setOrdinal;"
>>
>> On Fri, Nov 26, 2010 at 9:08 AM, Mikkel Eide Eriksen
>> <mikkel.erik...@gmail.com> wrote:
>> Hi all,
>>
>> I have the following bit in my code:
>>
>> if ([obj respondsToSelector:@selector(setOrdinal:)]) {
>> [obj setOrdinal:value];
>> }
>>
>> XCode gives a warning that obj may not respond to setOrdinal: which won't be
>> a problem unless something is really screwy. But how do I get rid of the
>> warning? Or do I just live with it?
>>
>> Regards,
>> Mikkel
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