Re: About iVars declaration and property
Re: About iVars declaration and property
- Subject: Re: About iVars declaration and property
- From: Dave Fernandes <email@hidden>
- Date: Sun, 13 Nov 2011 14:48:21 -0500
The synthesized ivars are private to the class that declares them. So you can use them as an ivar in that class's implementation, but not in a subclass implementation. Usually this is not a problem, but if you already have code that passes the ivar's address in a function call, for example, that won't work with a property.
On 2011-11-13, at 2:16 AM, ico wrote:
> I am surprise that I just know we do not need to declare instance variables
> explicitly when we declare the property and use @synthesize.
>
> That is we do not need a instance variable to be declared that is
> corresponds to the property declaration.
>
>
>
> look at this blog:
> http://cocoawithlove.com/2010/03/dynamic-ivars-solving-fragile-base.html
>
>
>
> However, I just wonder, is it really true that there is no ANY different
> between explicitly declaring iVars and not delaring it?
>
> If so, is it a better approach that just declare the property and let
> @synthesize to generate the iVars itself.
>
>
>
> Any more explaination and clarify will be appreciated.
>
> --
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