John Chambers wrote: > A recent revision (svn version 39077) has introduced an internal flag (a > bit in the C structure) that is turned on by the code that generates > objects from an S4 class. > > There are corresponding tests for an S4 object, isS4() in R and > IS_S4_OBJECT() in C. These are fast and reliable, and should replace > any heuristic tests previously used. > > The tests are not currently used widely, but in the future could be > combined with some of the other recent changes to improve reliability > and efficiency of computations with S4 objects. Most such changes are > more likely for 2.5.x than 2.4.0. > > S4 objects in saved sessions and other binary files will not have the > bit set, so they should be regenerated. A likely symptom that you have > not done so is that the objects will not print automatically with the > standard S4 method, because the internal code now checks for an S4 > object before dispatching show(). > > John
Dear R-devel testers under Windows, this means that I won't upload the newly built Windows binary packages right now, but I will rebuild all of them again under current R-devel tomorrow. They won't appear on CRAN master before Wednesday. In the meantime, the link to R-2.3.x packages will remain active and some packages simply won't work. Best, Uwe Ligges ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
