SplitStringUsingDelimiter.swift

let string = "This a string split using * and this is left."
if let range = string.range(of: "*") {
    let lastPartIncludingDelimiter = string.substring(from: range.lowerBound)
    print(lastPartIncludingDelimiter) // print * and this is left.

    let lastPartExcludingDelimiter = string.substring(from: range.upperBound)
    print(lastPartExcludingDelimiter) // print and this is left.

    let firstPartIncludingDelimiter = string.substring(to: range.upperBound)
    print(firstPartIncludingDelimiter) // print This a string split using *

    let firstPartExcludingDelimiter = string.substring(to: range.lowerBound)
    print(firstPartExcludingDelimiter) // print This a string split using
}