https://issues.dlang.org/show_bug.cgi?id=6447
--- Comment #6 from hst...@quickfur.ath.cx --- That doesn't help when you actually *need* a BigInt, e.g., iota(BigInt(2)^^65536). Of course, you'd run into other problems with that (e.g., you'll be waiting a looong time for your program to finish), but the idea is that you want to iterate over numbers that only BigInt can represent, right? --