Re: NSMatrix problem
Re: NSMatrix problem
- Subject: Re: NSMatrix problem
- From: "John C. Randolph" <email@hidden>
- Date: Tue, 3 Jul 2001 03:59:14 -0700
On Tuesday, July 3, 2001, at 12:02 AM, Mark T wrote:
On another matter entirely, isn't it a little odd that NSNumber doesn't
allow you to change its value after the object has been created?
It's an immutable class, and there are benefits to drawing a distinction
between mutable and immutable objects. If I hand you an NSNumber and
you can rely on its value not changing, you don't need to copy it, it's
sufficient to send it a -retain message.
-jcr
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