Reading binary streams with decoding to Unicode

[Vinay Sajip]

On Monday, 15 October 2018 at 17:55:34 UTC, Dukc wrote:
> This is done automatically for character arrays, which includes 
> strings. wchar arrays wil iterate by UTF-16, and dchar arrays 
> by UTF-32. If you have a byte/ubyte array you know to be 
> unicode-encoded, convert it to char[] to iterate by code points.

Thanks for the response. I was looking for something where I 
don't have to manage buffers myself (e.g. when handling buffered 
file or socket I/O). It's really easy to find this functionality 
in e.g. Python, C#, Go, Kotlin, Java etc. but I'm surprised there 
doesn't seem to be a ready-to-go equivalent in D. For example, I 
can find D examples of opening files and reading a line at a 
time, but no examples of opening a file and reading Unicode chars 
one at a time. Perhaps I've just missed them?