how to find the index of a character in a string from specific position

I know how to find an index of a character like the following:

func indexOfCharacter(myString:String, char: Character) -> Int {
        if let idx = find(myString, char) {
            return distance(self.startIndex, idx)
            return -1;


How can I look for an index after a specific position ?


I would like to get the index of the second ‘d’ = 7

indexOfCharacter(myString,character : 'd',fromIndex: 4);

any help ?

Source: ios

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