Not understanding NSString's compare:options:range:locale: method
Not understanding NSString's compare:options:range:locale: method
- Subject: Not understanding NSString's compare:options:range:locale: method
- From: Derek Huby <email@hidden>
- Date: Tue, 05 Oct 2010 10:48:28 +0100
This method isn't doing what I expect it to do (which probably means that I'm expecting the wrong thing.)
//=====================================================
NSRange range = NSMakeRange(0,1);
NSString *s1 = @"ab";
NSString *s2 = @"ac";
//Just compare the first character
NSComparisonResult result1 = [s1 compare:s2 options:NSLiteralSearch range:range locale:[NSLocale currentLocale]];
NSLog(@"Result 1 = %d", result1);
//Now swap the order of the strings
NSComparisonResult result2 = [s2 compare:s1 options:NSLiteralSearch range:range locale:[NSLocale currentLocale]];
NSLog(@"Result 2 = %d", result2);
//=====================================================
I get a result of -1 both times. Since we are only comparing the first character, shouldn't the result be 0?
Thanks for any illumination,
Derek Huby
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