[ruby-core:103608] [Ruby master Feature#17834] Add a Bytes and BytesArray class that implement memoryview

Issue #17834 has been reported by dsisnero (Dominic Sisneros).

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Feature #17834: Add a Bytes and BytesArray class that implement memoryview
https://bugs.ruby-lang.org/issues/17834

* Author: dsisnero (Dominic Sisneros)
* Status: Open
* Priority: Normal
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"this is a string.bytes should == Bytes.new('this is a string')  # an immutable bytes object that implements memory view

bytestring = Bytes.new('this is a string')

mv = Fiddle::MemoryView.new(bytestring)
mv[0] # 116

similary String.new('this is a string').bytes  == ByteArray.new('this is a string')  #  a mutable byte array object that implements memoryview , takes an optional encoding that uses current string encoding

ba = ByteArray.new('this is a string')
mv = Fiddle::MemoryView.new(ba)
mv[0] # 116
mv[0] = 120 # memoryview works on underlying object - changes mv.obj
ba.pack('C*').force_encoding('UTF-8') # 'xhis is a string'

also it would be good if String#bytes returns the new classes - (return something that implements memoryview)




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