Extract out hashtags using Swift Regex Literals

Hashtag.swift

let hashTagExpression = /(#+[a-zA-Z0-9(_)]{1,})/
let note = "this is my #note with a #tag #whatup"
let ranges = note.ranges(of: regEx2)

ranges.forEach {
    // Remove the # by skipping over the first character.
    let newStart = note.index(after: $0.lowerBound)
    let newRange = newStart..<$0.upperBound
    let str = String(note[newRange])
    print(str)
}