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