Re: KVC - how to get properties into a common form?
Re: KVC - how to get properties into a common form?
- Subject: Re: KVC - how to get properties into a common form?
- From: Jens Alfke <email@hidden>
- Date: Thu, 3 Apr 2008 07:54:31 -0700
On 3 Apr '08, at 5:19 AM, Matt Gough wrote:
Is there an easy way to convert whatever <id> is into a common form
(a string, in my case), or do I have to have a huge switch
statement that checks the class and calls different code for each
kind to convert to a string? (or similar, like an NSObject category
that implements -stringValue, overridden for every class). Just
wondering if there's something built-in that will do this already.
There is -description, but that probably isn't what you want.
I think it's probably the best option. For classes that have a
"natural" string representation, like NSString and NSNumber, -
description returns it. For others, it at least returns something
readable.
The problem, Graham, is that it's ambiguous what the string
representation of an arbitrary object is supposed to be. With a few
exceptions as above, it tends to be pretty task-specific. Should an
array look like "a, b, c", or "{a; b; c;}" or "<item>a</item> <item>b</
item> <item>c</item>" or ...? So there can't be a single built-in
method that does the right thing for every purpose.
—Jens
Attachment:
smime.p7s
Description: S/MIME cryptographic signature
_______________________________________________
Cocoa-dev mailing list (email@hidden)
Please do not post admin requests or moderator comments to the list.
Contact the moderators at cocoa-dev-admins(at)lists.apple.com
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden