using_something | R Documentation |
These functions were extracted from the devtools package to make them available without a dependency to devtools.
using_envvar(new, code, action = "replace")
using_env(new, code)
using_locale(new, code)
using_collate(new, code)
using_dir(new, code)
using_libpaths(new, code)
using_lib(new, code)
using_options(new, code)
using_par(new, code)
using_path(new, code, add = TRUE, prepend = FALSE)
new |
values for setting |
code |
code to execute in that environment |
action |
(for |
add |
Combine with existing values? Currently for
|
prepend |
logical that indicates if the new paths should be added in front of the current ones. |
using_dir
: working directory
using_collate
: collation order
using_envvar
: environmental variables
using_libpaths
: library paths, replacing current libpaths
using_lib
: library paths, prepending to current libpaths
using_locale
: any locale setting
using_options
: options
using_path
: PATH environment variable
using_par
: graphics parameters
Nothing, used for side effect.
using_env
will be deprecated in devtools 1.2 and removed in
devtools 1.3
Hadley Wickham
getwd()
using_dir(tempdir(), getwd())
getwd()
Sys.getenv("HADLEY")
using_envvar(c("HADLEY" = 2), Sys.getenv("HADLEY"))
Sys.getenv("HADLEY")
using_envvar(c("A" = 1),
using_envvar(c("A" = 2), action = "suffix", Sys.getenv("A"))
)
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