[Issue 6447] iota(BigInt) too

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=6447

--- Comment #6 from hsteoh at 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?

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