Hi Duncan: Luke's article is in the June, 2003 edition of R-news On Mon, Nov 15, 2010 at 8:43 PM, Duncan Murdoch <murdoch.dun...@gmail.com>wrote:
> Hadley Wickham wrote: > >> Hi all, >> >> I'm trying to understand how the search path and namespaces interact. >> For example, take the devtools package which suggests the testthat >> package. Here's what the search path looks like after I load each of >> those packages: >> > > Luke Tierney wrote up a nice description of this a few years ago. It's > either on developer.r-project.org, or in an old issue of R News. > > Duncan Murdoch > > >> library(devtools) >>> search() >>> >> [1] ".GlobalEnv" "package:devtools" "package:stats" >> [4] "package:graphics" "package:grDevices" "package:utils" >> [7] "package:datasets" "package:methods" "Autoloads" >> [10] "package:base" >> >>> library(testthat) >>> search() >>> >> [1] ".GlobalEnv" "package:testthat" "package:devtools" >> [4] "package:stats" "package:graphics" "package:grDevices" >> [7] "package:utils" "package:datasets" "package:methods" >> [10] "Autoloads" "package:base" >> >> My question is this: when I execute the test function in devtools >> function it calls the the test_package function in the testthat >> package - but that function is located higher up the search path - how >> does R find it? >> >> (I ask this question because I'm trying to simulate package loading >> from within R to simplify the development cycle, but something is >> missing in my knowledge of namespaces, and so I have the devel >> versions of my packages can't access packages that are loaded after >> they are) >> >> Hadley >> >> > ______________________________________________ > R-devel@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-devel > [[alternative HTML version deleted]] ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
