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Re: [h5md-user] File format versioning


From: Pierre de Buyl
Subject: Re: [h5md-user] File format versioning
Date: Fri, 14 Nov 2014 11:39:43 +0100
User-agent: Mutt/1.5.21 (2010-09-15)

Hi all,

On Thu, Sep 18, 2014 at 02:41:46PM +0200, address@hidden wrote:
> On Mon, Sep 08, 2014 at 03:54:07PM +0200, Felix Höfling wrote:
> > 
> > >Felix Höfling writes:
> > >
> > How is this handled by other file formats? Does a Python 2.7 code
> > run with a Python 2.4 interpreter? Or can Acrobat Reader 4 (=very
> > old) process an encrypted 1.4 file?
> 
> I am not bringing a conclusion yet but my "idea of the day"™ is: what does the
> HDF group do about it? And they have a document explaining how backward and
> forward compatibility works in HDF5 :-)
> 
> http://www.hdfgroup.org/HDF5/faq/bkfwd-compat.html

Here is another line of thought. We could use the following principle:
As long as it is possible for a H5MD i.j+1 reader to read a H5MD i.j file
unambiguously and in a single codebase, we may use i.j+1 for the update. Else,
the version jumps to i+1.0

P



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