Can anyone explain what I'm missing here? max(pp1 <- package_version(c("0.99999911.3","1.0.4","1.0.5"))) ## [1] ‘1.0.4’
max(pp2 <- package_version(c("1.0.3","1.0.4","1.0.5"))) ## [1] ‘1.0.5’ I've looked at ?package_version , to no avail. Since max() goes to .Primitive("max") I'm having trouble figuring out where it goes from there: I **think** this is related to ?xtfrm , which goes to .encode_numeric_version, which is doing something I really don't understand (it's in base/R/version.R ...) .encode_numeric_version(pp1) ## [1] 1 1 1 ## attr(,"base") ## [1] 99999912 ## attr(,"lens") ## [1] 3 3 3 ## attr(,".classes") ## [1] "package_version" "numeric_version" .encode_numeric_version(pp2) ## [1] 1.083333 1.111111 1.138889 ## attr(,"base") ## [1] 6 ## attr(,"lens") ## [1] 3 3 3 ## attr(,".classes") ## [1] "package_version" "numeric_version" sessionInfo() R Under development (unstable) (2013-09-09 r63889) Platform: i686-pc-linux-gnu (32-bit) [snip] attached base packages: [1] stats graphics grDevices utils datasets methods base loaded via a namespace (and not attached): [1] compiler_3.1.0 tools_3.1.0 ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel