Re: NSUserDefaults synchronization in Foundation tools
Re: NSUserDefaults synchronization in Foundation tools
- Subject: Re: NSUserDefaults synchronization in Foundation tools
- From: Jens Alfke <email@hidden>
- Date: Tue, 8 Sep 2009 16:24:33 -0700
On Sep 8, 2009, at 4:13 PM, Sidney San Martín wrote:
"Because this method is automatically invoked at periodic intervals,
use this method only if you cannot wait for the automatic
synchronization (for example, if your application is about to exit)"
To my knowledge that's always been incorrect — the only time
NSUserDefaults synchronizes automatically is upon quit. The app can
change a default, stay running for days, then crash; and the default
won't have been written to disk so the change is lost. So I've always
ended up calling -synchronize myself, either immediately or using a
perform-after-delay.
—Jens_______________________________________________
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