Operator
+(_:_:)
Unions two character sets.
func + (lhs: ValidationCharacterSet, rhs: ValidationCharacterSet) -> ValidationCharacterSet
Discussion
.characterSet(.alphanumerics + .whitespaces)
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Operator
func + (lhs: ValidationCharacterSet, rhs: ValidationCharacterSet) -> ValidationCharacterSet
.characterSet(.alphanumerics + .whitespaces)