def classify
import bolt@1.27.0.0/src/syntax/lex.bend as Leximport Base
125# a char's class
126def classify(+cc: Char) -> Class:
127 +other = Bool.pick(Class, Char.is_alpha(cc), CAlpha{},
128 Bool.pick(Class, Char.is_digit(cc), CDigit{}, COp{}))
129 classify.go(Char.to_u32(cc), other)