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RE: st: Convention for replacing an existing routine on SSC with a revision that has major syntax changes.


From   Nick Cox <n.j.cox@durham.ac.uk>
To   "'statalist@hsphsun2.harvard.edu'" <statalist@hsphsun2.harvard.edu>
Subject   RE: st: Convention for replacing an existing routine on SSC with a revision that has major syntax changes.
Date   Wed, 25 Aug 2010 15:16:00 +0100

Yes, that's it. The two versions can coexist with a branch on c(version). Or you can test for one syntax and given a syntax error allow a test for the other syntax. 

Nick 
n.j.cox@durham.ac.uk 

Austin Nichols

David Elliott <dcelliott@gmail.com> :

If the original version does not use Mata, it may be version 8 compatible; see
ssc d ivreg28
for how the authors of ivreg2 differentiate the old and new versions.

On Wed, Aug 25, 2010 at 9:55 AM, David Elliott <dcelliott@gmail.com> wrote:

> The subject line above almost says it all.
>
> I have completely rewritten my file chunking routine -chunky- to use a
> different and far more efficient chunking strategy using Mata for the
> file I/O.  It is basically a completely different program.  I am
> currently calling it -chunky_mata- to during testing to distinguish it
> from -chunky- but it is my intent to completely supplant the original
> routine which, quite frankly, was an ugly kludge for which I am almost
> ashamed to claim ownership.
>
> The syntax has changed from:
> chunky using filename , index(#) chunk(#) saving(filename[, replace])
> to
> chunky using filename ,[ [peek(#) analyze] | [chunksize(#.#)
> header(string) stub(string) replace]
>
> What is the convention for replacing a routine that will "break" any
> previous programs written using it?
>
> I appreciate your guidance.

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