Re: [DotGNU]TextWriter, 'standard' overriding (a little OT)

[S11001001]

Rhys Weatherley wrote:

> S11001001 wrote:
> > 2. Can you override methods AllTypes.xml doesn't say to? Can you NOT override
> > methods AllTypes.xml tells you to?
>
> Whatever the AllTypes.xml file says, that's how we need to
> declare it.  It's odd that "Write(char)" is not abstract, but
> that's just the way it is.
>
> I suppose that theoretically one could inherit "TextWriter"
> and only use "Write(string)" on the inherited class.  It would
> be annoying to have to also override "Write(char)", given
> that it will never be used.


What I mean is, while Stream declares CanRead, CanWrite, Write(byte[], int, 
int), ... as abstract, these are not implemented in TextWriter, and nothing 
says to implement them in either TextWriter or StringWriter. However, 
StringWriter is a concrete class, and that means one has to implement these to 
create a valid concrete class. However, there is no mention of implementing 
these in AllTypes. There are all sorts of areas where this is not 
so...concrete, but is still important. For example, TextWriter should, 
according to the standard for Stream.CanRead, override BeginRead and related 
read functions to throw NotSupportedException.

Naturally, of course I would override the ones the standard tells you to, even 
if not technically necessary. But this was a sort of "do more" question, I 
believe necessary to have a working library.

Oh, I forgot a little protocol...I therefore announce that I am working on 
System.IO.StringWriter :)


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