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 12:56:25 -0400
On Apr 24, 2014, at 12:44 PM, Jens Alfke wrote:
>
> On Apr 24, 2014, at 7:33 AM, Alex Zavatone <email@hidden> wrote:
>
>> And we messed around a bit looking for any shorthand and though it looked like a terrible idea since the comparison is done against integers using the ternary operator, I'd like to know exactly why it's a terrible idea.
>> NSString x;
>> x = (x) ?: @"yo";
>
> It’s not a terrible idea; I use this pattern a lot.
>
> The ternary operator doesn’t just work on integers. It’s like “if”, it takes any expression that can be interpreted as a boolean. For a pointer the test is implicitly the same as “x != nil”. The example you gave is exactly equivalent to
> if (x)
> x = x;
> else
> x = @“yo”;
>
> —Jens
That's exactly what I was wondering.
I'll consider this a blessing of its legitimacy.
Awesome!
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