Pointless API Docs
pointless/prelude/chars.ptls (source)
lowers link
lowers = toSet("abcdefghijklmnopqrstuvwxyz")
uppers link
uppers = toSet("ABCDEFGHIJKLMNOPQRSTUVWXYZ")
alphas link
Set of uppercase and lowercase letters
digits link
digits = toSet("0123456789")
alNums link
Set of uppercase and lowercase letters and digits 0 through 9