#define KV(KEY,VALUE) VALUE, KEY myDict = MD(KV(key,val), KV(key2,val2)); Ugly but a case can be made that this end justifies the means. Another option i

#define KV(KEY,VALUE) VALUE, KEY myDict = MD(KV(key,val), KV(key2,val2)); Ugly but a case can be made that this end justifies the means. Another option is implementing your own dictionaryWithObjectsAndKeys where you flip the varargs and feed them back into the subclass dictionaryWithObjectsAndKeys.