getstack | R Documentation |
getstack
goes into the separate environment where pushd
and
popd
operate and returns the current stack of directories.
getstack()
none
Allowing a function to modify an object in the GlobalEnvironment is frowned upon by CRAN (and most programmers), so to maintain a directory stack a separate environment is established by pushd
. Since this environment is not visible at the console level, getstack
allows the user to check on the current status of the stack.
The current directory stack is returned as a vector of strings.
Carl Witthoft carl@witthoft.com
popd
, pushd
, setwd
## depends on your local directory structure and permissions
getwd()
getstack() #empty, probably
pushd('..')
getstack()
pushd('.')
getstack()
popd()
getstack()
popd()
getstack()
getwd() #back where we started
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