Daniel
You are trying to create a singleton object in cocoa and there is a good
documentation on this at:
http://developer.apple.com/documentation/Cocoa/Conceptual/CocoaFundamentals/CocoaObjects/chapter_3_section_10.html
-Shripada
>
> Thanks! Exactly what I was looking for.
>
> Daniel
>
>
>
On Tue, Jul 1, 2008 at 6:49 PM, Jonathan Hess <[EMAIL PROTECTED]> wrote:
> Han Daniel -
>
> You can use a global variable just like you would in C:
Yes, but...
> static Foo *bar = nil;
That's not a global. Static vars are file scoped. :-)
In Foo.m:
Foo *globalFoo = nil;
In Foo.h, somewher
Thanks! Exactly what I was looking for.
Daniel
Jonathan Hess wrote:
Han Daniel -
You can use a global variable just like you would in C:
static Foo *bar = nil;
@implementation Foo
+ (id)bar {
if (!bar) {
bar = [[Foo alloc] init];
}
return bar;
Han Daniel -
You can use a global variable just like you would in C:
static Foo *bar = nil;
@implementation Foo
+ (id)bar {
if (!bar) {
bar = [[Foo alloc] init];
}
return bar;
}
@end
Thats the simple single threaded case. Things get much more
interesting if you want to be
search for singleton pattern (in the archives and in Apple doc too).
The simplest way to do it is (not thread safe):
@implementation Foo
+ (Bar *)sharedFoo {
static Foo *shardInstance = nil;
if (!sharedInstance)
sharedInstance = [[Foo alloc] init];
return sharedInstance;
}
@end
Le 2
Hi All,
I have created a class (call it Foo) that there will be one and only one
instance of (call it Bar). I need some way to have Foo keep a pointer to
Bar, so when another object asks for the pointer to Bar, Foo will be
able to return the pointer.
Presumably this can be done, as NSNotific
