Redeeming an IOU
The act of reading a result from an IOU is called redeeming the IOU. To redeem an IOU, you must possess an RWTIOUResult handle that references the IOU escrow object.
The RWTIOUResult class has three functions for redeeming the IOU:
A function operator operator()().A conversion operator operator Redeemable().A redeem() function. These three members perform an identical function. Given that iou is an instance of the RWTIOUResult class, the following statements are functionally equivalent:
value = iou();
value = iou;
value = iou.redeem();
