Re: Passing non-string user defaults through command line arguments
Re: Passing non-string user defaults through command line arguments
- Subject: Re: Passing non-string user defaults through command line arguments
- From: Christiaan Hofman <email@hidden>
- Date: Wed, 06 Apr 2011 01:48:35 +0200
On Apr 6, 2011, at 1:35, Justin C. Walker wrote:
>
> On Apr 5, 2011, at 16:16 , Chris Suter wrote:
>
>> Sorry, I meant to send this to the list
>>
>> ---------- Forwarded message ----------
>> Hi Christiaan,
>>
>> On Wed, Apr 6, 2011 at 2:53 AM, Christiaan Hofman <email@hidden> wrote:
>>> Sometimes I want to test my app with a particular value for a user default.
>>> I do this by adding a command line argument (in the info for the executable
>>> in Xcode) for the user default key. This works for string values, however
>>> when the value needs to be something else (e.g. a boolean), I cannot get
>>> this to work. Is there a way to do this?
>>
>> Yes.
>>
>> // Using XML
>> -argument '<integer>1</integer>'
>> // Using old style (probably deprecated)
>> -argument '(one, two, three)'
>
> Unless I misunderstand this, the program still has to know, or be told, that the (string!) arguments have to be translated/interpreted as the specified "objects". It is not the case that the code can look something like
>
> main(argc, argv)
> { int i;
> i = argv[2];
> ...
> }
>
> when called with, e.g.,
>
> $ foo -argument '<integer>1</integer>'
>
> We maybe should have resorted to a specific example earlier in this thread, to help the discussion.
>
> Do we agree on this? Am I missing something (like a change in the technology since last I waded into this area)?
>
> Christian: is this something like what you are asking about? If not, can you give a short snippet that shows what you want?
>
> Justin
Again, it's not about the type of the raw *shell* arguments. It's about how the *app* interprets the argument values as *Cocoa* objects. So I'm talking about NSArgumentDomain, not about the raw arguments.
I find it very hard to find documentation on this. All I can find is a very short paragraph about NSArgumentDomain, which is in fact wrong (it says I can pass NO as a value, but that is not working in practice).
Christiaan
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