On Aug 1, 2012, at 8:00 AM, Erik Stainsby <[email protected]> wrote:
> So I have a dictionary like so:
>
> NSDictionary * countries = [NSDictionary dictionaryWithObjects:[NSArray
> arrayWithObjects:@"Australia",@"Canada",@"United Kingdom",@"United
> States",nil] forKeys:[NSArray arrayWithObjects:@"au",@"ca",@"uk",@"us",nil]];
>
> I want to present them alphabetically as menuItems in an NSPopUpButton. I
> grab the list of keys:
>
> NSMutableArray * sortkeys = [NSMutableArray arrayWithArray:[countries
> allKeys]];
>
> What I have come up with is this:
>
> [sortkeys sortUsingComparator:^NSComparisonResult(id obj1, id obj2) {
> return [(NSString*)obj1 compare:(NSString*)obj2 ];
> } ];
>
> Is this a sane approach ? Seems a bit fussy to have to spec the cast like
> this. Or is this just the what-is of this kind of functionality?
If your comparison is only going to be a single method call with a single
parameter like this, then probably a bit simpler to use:
[sortkeys sortUsingSelector:@selector(compare:)];
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