haracters, including 1.2.10.
>
> in SVN r71889 (2017-01-03):
>
> https://github.com/wch/r-source/commit/a0fe05ce9d0937ad2334bb370785cb22c71e592b
>
> /Henrik
Thanks, sorry I missed that.
Justin
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uot;, 5) < 0 && (strlen(ZLIB_VERSION) < 6 ||
strncmp(ZLIB_VERSION, "1.2.10", 6) < 0));
#else
exit(1);
#endif
This could of course be improved to properly parse the string.
Cheers,
Justin
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e language functions and
are found via the global environment at compile time may be inlined."
This is an area where a small change to the language spec would impact
essentially no users and would result in a language that could be
executed much more efficiently.
Justin Talbot
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artpl.R is used anywhere, so this may have
never caused an issue. But it's tripping up my R compiler.
Thanks,
Justin Talbot
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gt; pmatch(c('a','ab'), c('abc', 'ax'), duplicates.ok=FALSE)
[1] NA 1
It would be great if this were documented.
At a higher level, is pmatch intended to be the same as the argument
matching algorithm or is it just supposed to be "close"?
Justin
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e NAMED value
causing the necessary copy to be made so the RHS is returned from the
assignment.
Would it be sufficient to add a check to do_subassign2_dflt
and do_subassign3_dflt that creates a duplicate of the LHS if the LHS & RHS
are the same object?
Justin
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es the language a bit more complicated, but
that might be the right trade off. I would strongly suggest adding
pany and pall as well. I find myself wishing for them all the time.
prange would be nice as well.
Justin
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has two simple reduction functions that
don't have corresponding operators: range and length. Having a prange
operator and a plength operator would nicely round out the language.
Justin
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>
> Thanks for the clarification Justin. What about the S4 classes
> and methods? The design resembles CLOS, and currently this
> is interpreted R code. Have you addressed performance issues
> associated with this? What relative impact does this have compared
> with other
Unladen Swallow, have not
been particularly successful. It remains to be seen how well R would
map to LLVM.
Justin
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>
> On 8 March 2012 at 11:06, Justin Talbot wrote:
> | I've been working on an R performance academic project for the last
> | couple years which has involved writing an interpreter for R from
> | scratch and a JIT for R vector operations.
>
> Cool. I think John mentio
unctions would have to be checked and updated? This is a
severe hinderance on improving performance.
I see little value is debating changes to the language semantics until
we've addressed this low hanging fruit and at least tried to make the
current R
z' had non-zero exit status
==
My system is Linux cc01 2.6.18-238.19.1.el5 #1 SMP Fri Jul 15 07:31:24 EDT 2011
x86_64 x86_64 x86_64 GNU/Linux
Can anyone help?
Thanks,
Justin
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", but doesn't say anything about evaluation
order.
In general, for primitive and internal functions, is a particular
evaluation order for the arguments guaranteed?
Thanks,
Justin Talbot
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vertical gap between x=5 and
x=100.
Is this the correct behavior? Could there be an option added to choose
between these two behaviors? Either way, it should be stated in the
documentation.
Justin
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R-devel@r
hics grDevices utils datasets methods base
>
-Justin
On Thu, Aug 13, 2009 at 4:48 AM, Gavin Simpson wrote:
> On Wed, 2009-08-12 at 20:26 -0400, Justin Donaldson wrote:
> > The eurodist dataset (my favorite for mds) is malformed. Instead of a
> > standard distance matrix
1498 206 409
...
Best,
-Justin
--
Justin Donaldson
PhD Candidate, Informatics
Indiana University
http://www.scwn.net
aim: iujjd
twitter: jjdonald
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