How to use compare on a version number where theres less parts in one number in Objective-C?

Question

I\'ve found the following code at http://snipplr.com/view/2771

Which is pretty good, almost exactly what I was looking for, but if I use the values @\"1.4.5\", @

Answer 1

Why don't use NSString compare:options:NSNumericSearch

NSString *sysVer = [[UIDevice currentDevice] systemVersion];
NSLog(@"%@,%d,%d,%d", sysVer, [sysVer compare:@"1.0" options: NSNumericSearch], [sysVer compare:@"6.0" options: NSNumericSearch],[sysVer compare:@"10.0" options: NSNumericSearch]);
if ([sysVer compare:@"6.0" options: NSNumericSearch]>=NSOrderedSame) {
    NSLog(@"ios 6");
}