On 5 November 2014 at 14:11, Romain Francois wrote: | > Le 5 nov. 2014 à 13:43, Dirk Eddelbuettel <e...@debian.org> a écrit : | > You are NOT forced or required to use the Boost distributions header __as R | > comes with the equivalent functionality__ via the Rmath.h header file from R. | > Which has functionality that Rcpp provides to you in scalar and vector form. | > | > And there are probably several dozen examples of using the R distribution | > functions from Rcpp. | > | > So this is _precisely_ what I suggested several mails ago: do your homework, | > identify which header is causing it. And the obvious next step is then to | > not use the header. | | So why these headers are shipped with BH then.
The BH "builder" (ie the script local/scripts/CreateBoost.sh in the repo) actively selects a number of Boost libraries [1], and uses the Boost tool 'bcp' to copy these (header-only) libraries -- plus all their dependencies. The set of "selected components" grew out of initial requirements, plus requests received since the package was created. [2] Now, just because some files within a library tickle a warning does not seem to imply that all use of said warning is impossible. By my count, over two dozen CRAN packages currently depend on BH [3] indicating some usefulness of BH, including to the dplyr package you work on. Policies and requirements do of cause charge, but I am not aware of any of the two dozen package tickling this issue -- their use case is just fine, thank you, and their requirements lead to the inclusion of the header currently comprised in the package. I hope this answers your question. Should you have further questions concerning the BH package, could you be so kind as to bringing them to appropriate list [4] or filing a ticket on GH? Thanks, Dirk [1] "components" may be a better term so we avoid the association with "linking" [2] Another one of these requests just came in this week asking for circular_buffer. [3] http://cran.r-project.org/web/packages/BH/index.html [4] http://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/boostheaders-devel -- http://dirk.eddelbuettel.com | @eddelbuettel | e...@debian.org ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
