Re: [io] writer/reader sub-packages

[Michael Davey]

Took a while to get the idea into my head. Think I understand you now.

[for the sake of the list]:

The lib you mention has a unified Stream which has both the reading and
writing parts in [summarising a touch]. This is nice except that it means
that 'XmlReadStream' does not extend java.io.InputStream. It'd be nice to
hear some good positives for the joined version

Allows you to do things like:

void write( OutputStream out ) {
out.asFoo( this );
}

void read( InputStream in ) {
in.asFoo( this );
}

/* balanced read/write */
void asFoo( IOStream stream ) {
objA = stream.asFoo( objA );
objB = stream.asFoo( objB );
}

...as I said before, it forces the raeder and writer to be balanced (that is, it is unlikely that an inteligent programmer will accidentally code asFoo() in such a way that read() fails to read the data written by write()).

as I think the surprise of
discovering the io classes don't extend Java ones would be a big negative.

Agreed.  I'm not sure the positives outweigh the negative either.

--
Michael

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