Re: Good idea/bad idea?
Re: Good idea/bad idea?
- Subject: Re: Good idea/bad idea?
- From: Alex Zavatone <email@hidden>
- Date: Thu, 24 Apr 2014 19:21:07 -0400
On Apr 24, 2014, at 5:21 PM, Andy Lee wrote:
>
> On Apr 24, 2014, at 4:10 PM, Alex Zavatone <email@hidden> wrote:
>
>> Could we throw a category on NSObject for that and then every class that originates with NSObject gets that lovely method?
>
> Not exactly, because unlike Smalltalk's nil, Objective-C's nil is *not* an object. But you could switch it around:
>
> @implementation NSObject (NilCheck)
> - (id)fallbackIfNil:(id)obj { return obj ?: self; }
> @end
>
> I still don't see how
>
> foo = [@"Something" fallbackIfNil:foo];
>
> has any advantage over
>
> foo = foo ?: @"Something";
>
> which is less verbose, doesn't have the cost of a message send, and uses an operator the reader of the code should already know.
>
> --Andy
Yeah, I was thinking about something less verbose, but still expressive of the task trying to be accomplished.
something like…
z = [initMeIfNil: z as:@"my most awesome string ever"];
Or something to that effect but neater and tinier.
- Alex
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