Error : Binary operator '>=' cannot be applied to operands of type 'String.Index?' and 'Int' in swift

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Solution:

 To find the index of substring in a string in a particular index.Here we had an example with "t" string is in 0th position.

Code:

        let str = request.url?.absoluteString

        if str?.startIndex.distance(to:str?.index(of: "t")) != 0 {
}

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