/Swift/Allowed filename characters swift

Allowed filename characters swift

 extension String {
    func convertToValidFileName() -> String {
        let invalidFileNameCharactersRegex = "[^a-zA-Z0-9_]+"
        let fullRange = startIndex..<endIndex
        let validName = replacingOccurrences(of: invalidFileNameCharactersRegex,
                                           with: "-",
                                        options: .regularExpression,
                                          range: fullRange)
        return validName
    }
}

Source: stackoverflow.com

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