isAscii package:base-prelude

isAscii :: Char -> Bool
base-prelude BasePrelude
Selects the first 128 characters of the Unicode character set, corresponding to the ASCII character set.
isAsciiLower :: Char -> Bool
base-prelude BasePrelude
Selects ASCII lower-case letters, i.e. characters satisfying both isAscii and isLower.
isAsciiUpper :: Char -> Bool
base-prelude BasePrelude
Selects ASCII upper-case letters, i.e. characters satisfying both isAscii and isUpper.