End of this blog you will be able to understand the Access control specifiers open, public,internal,file-private and private in swift 3.

When we have some binary data that need to send across network, we generally don't do it by just streaming the bits and bytes over the wire in a raw format. Why ?Because some media are made for streaming text. You never know some protocols may interpret your binary data as control characters (like a modem), or your binary data could be screwed up because the underlying protocol might think that you've entered a special character combination (like how FTP translates line endings).So ...