oneOf package:turtle

oneOf :: [Char] -> Pattern Char
turtle Turtle.Pattern
Match any one of the given characters 
>>> match (oneOf "1a") "1"
"1"

>>> match (oneOf "2a") "1"
""
noneOf :: [Char] -> Pattern Char
turtle Turtle.Pattern
Match anything other than the given characters 
>>> match (noneOf "2a") "1"
"1"

>>> match (noneOf "1a") "1"
""