I guess that I should have been reminding that the thread referred to is
mostly about C API-level utilities (and the subject for this thread
should be mentioning more precisely *R_tryEval()* ).
Wrapping evaluation from C-level in an R-level withVisible() call is
certainly possible if this is the only way to do it:
- a C-level utility function is probably becoming handy (and that's
mostly what the wish is about, AFAIUI).
- the traceback has at least one added layer from the call to
withVisible(); this is something supplementary to take care of when
writing a GUI for example.
Those are possible reasons why the threads tells that withVisible()
[R-level] is a temporary option, waiting for something like
R_tryEvalWithVis() [C-level].
Can't I find any such C-level because there isn't any, or because I just
missed it ?
Thanks,
L.
Duncan Murdoch wrote:
On 07/03/2009 9:51 AM, Laurent Gautier wrote:
Dear list,
Did the wish for an official API for evaluating expressions while
keeping an eye on the R_Visible flag (see:
https://stat.ethz.ch/pipermail/r-devel/2007-April/045258.html
) lead to something ?
I could not find a sign of it the current (R-2.8.1 and R-2.9-dev) R
defines.
You should read the NEWS file, where you'll find withVisible mentioned.
Duncan Murdoch
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