help {devtools} | R Documentation |
The ?
and help
functions are replacements for functions of the
same name in the utils package. They are made available when a package is
loaded with load_all
.
# help(topic, package = NULL, ...) # ?e2 # e1?e2
topic |
A name or character string specifying the help topic. |
package |
A name or character string specifying the package in which to search for the help topic. If NULL, search all packages. |
... |
Additional arguments to pass to |
e1 |
First argument to pass along to |
e2 |
Second argument to pass along to |
The ?
function is a replacement for ?
from the
utils package. It will search for help in devtools-loaded packages first,
then in regular packages.
The help
function is a replacement for help
from
the utils package. If package
is not specified, it will search for
help in devtools-loaded packages first, then in regular packages. If
package
is specified, then it will search for help in devtools-loaded
packages or regular packages, as appropriate.
## Not run: # This would load devtools and look at the help for load_all, if currently # in the devtools source directory. load_all() ?load_all help("load_all") ## End(Not run) # To see the help pages for utils::help and utils::`?`: help("help", "utils") help("?", "utils") ## Not run: # Examples demonstrating the multiple ways of supplying arguments # NB: you can't do pkg <- "ggplot2"; help("ggplot2", pkg) help(lm) help(lm, stats) help(lm, 'stats') help('lm') help('lm', stats) help('lm', 'stats') help(package = stats) help(package = 'stats') topic <- "lm" help(topic) help(topic, stats) help(topic, 'stats') ## End(Not run)