Thanks everyone for your help! My code has been cleaned up quite a bit:
from strutils import toLowerAscii
from sequtils import toSeq
from sets import toSet, `<=`
const letters = toSeq('a'..'z').toSet()
func isPangram*(text: string): bool =
return toSet(text.toLowerAscii()) >= letters
Run
However I'm still getting the same compiler error. I read about templates, but
perhaps I have more reading to do? I don't understand why if I import <= from
sets, I get the compile error, but if I import everything from sets, it works
just fine. I tried not importing <= in case the proper functioning operator was
coming from system, but that doesn't seem to be the case.
