Re: semantics of init
Re: semantics of init
- Subject: Re: semantics of init
- From: Christian Brunschen <email@hidden>
- Date: Wed, 4 Jun 2003 10:34:27 +0200 (MEST)
On Wed, 4 Jun 2003, Marcel Weiher wrote:
>
Anyway, the pattern I use is the following:
>
>
-init
>
{
>
self=[super init];
>
[self setDict:[NSMutableDictionary dictionary]];
>
[self setArray:[NSMutableArray array];
>
return self;
>
}
>
>
So I use my accessors to avoid direct instance variable access. This
>
protects me from self being nil without the test, and it even protects
>
me from a different type of object being returned. (If the object
>
being returned isn't compatible in the message-interface, then it is
>
just broken).
>
>
Messaging is good.
Add in particular, accessor methods are good. They should always be used,
even, or should I say _especially_, in -init... and -dealloc.
Specifically, rather than
- dealloc {
[dict release];
[array release];
[super dealloc];
}
I would use
- dealloc {
[self setDict:nil];
[self setArray:nil];
[super dealloc];
}
for much the same reasons Marcel is citing in the case of the -init...
method above.
>
Marcel
// Christian Brunschen
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