On Sun, Dec 21, 2014 at 6:44 PM, CM <cmpyt...@gmail.com> wrote:
> Yes, just tested it on the same machine in the terminal and it prints:
>
> Hello, world!
> 13
>
> Not sure what the 13 is all about. Thanks.

Number of bytes output. It's the return value from the output call -
common with low-level APIs.

ChrisA
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