Adding Firebase data, dots and forward slashes

Question

I try to use firebase db, I found very important restrictions, which are not described in firebase help or FAQ.

First problem is that symbol: dot \'.\' prohibited in

Answer 1

If you're using Swift 3, this works for me (try it in a playground):

var str = "this.is/a#crazy[string]right$here.$[]#/"

if let strEncoded = str.addingPercentEncoding(withAllowedCharacters: .alphanumerics) {
    print(strEncoded)

    if let strDecoded = strEncoded.removingPercentEncoding {
        print(strDecoded)
    }
}