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pita5/gist:5717926

Created June 5, 2013 22:47
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gistfile1.txt
- (void)swap:(id*)a with:(id*)b
{
id c = *a;
*a = *b;
*b = c;
}
id a = @1;
id b = @2;
NSLog(@"a is %@",a);
NSLog(@"b is %@",b);
[self swap:&a with:&b];
NSLog(@"a is %@",a);
NSLog(@"b is %@",b);
2013-06-05 23:45:46.548 App[26572:c07] a is 1
2013-06-05 23:45:46.549 App[26572:c07] b is 2
2013-06-05 23:45:46.549 App[26572:c07] a is 2
2013-06-05 23:45:46.549 App[26572:c07] b is 1
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