assert_all_are_libraries: Is the directory a known R library?
Description
Checks to see if the input directories are known R
libraries.Usage
assert_all_are_libraries(x)
assert_any_are_libraries(x)
is_library(x)
Value
is_library
returns TRUE
if and only if the
input paths are known R package libraries. That is, they
must be paths returned by .libPaths
.