Re: Need localization-proof method of transporting dates.
Re: Need localization-proof method of transporting dates.
- Subject: Re: Need localization-proof method of transporting dates.
- From: Graham Cox <email@hidden>
- Date: Wed, 8 Apr 2009 21:46:17 +1000
On 08/04/2009, at 2:45 PM, Graham Cox wrote:
Thanks for all your help - just remains to be seen now if certain
users can now open my app! ;)
It occurs to me that there is another potential problem that I've
overlooked. System locale affects sorting, right? At least the comment
in the System Preferences > International suggests that to be the
case, and it makes sense of course.
So when I hash a dictionary, I sort the keys to ensure a consistent
order for the items, but if the sorting can vary with locale, I'm
going to be stuffed. Is there a locale-proof way to sort the keys? The
current code is:
@implementation NSDictionary (GCHash)
- (NSData*) gc_hash
{
NSMutableData* data = [NSMutableData data];
NSMutableArray* keys = [[self allKeys] mutableCopy];
[keys sortUsingSelector:@selector(caseInsensitiveCompare:)]; //
<<----------- potential problem????
NSEnumerator* iter = [keys objectEnumerator];
id key;
id obj;
while(( key = [iter nextObject]))
{
[data appendData:[key gc_hash]];
obj = [self objectForKey:key];
[data appendData:[obj gc_hash]];
}
[keys release];
return data;
}
@end
--Graham
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