LLVM 3.1 released(llvm.org)

  NSString *s = [NSString stringWithCString:"hello" encoding:NSUTF8StringEncoding];
  NSString *s = @("hello");

  // String concatenation
  NSString *s = @+(@"hello ", @"world");

  NSDictionary *d1 = @{ @"first":@"Hello", @("second"):@"World" };
  NSDictionary *d2 = @{ @"third":@"Greetings" };
  
  NSDictionary *cd = @|(d1, d2); // Dictionary merge
  NSDictionary *id = @&(d1, d2); // Dictionary intersect
  NSDictionary *dd = @^(d1, d2); // Dictionary difference