Get the integer indexes of individual branch names within their corresponding dynamic branching targets.
tar_branch_index(names, store = targets::tar_config_get("store"))Character vector of branch names.
Character of length 1, path to the
targets data store. Defaults to tar_config_get("store"),
which in turn defaults to _targets/.
When you set this argument, the value of tar_config_get("store")
is temporarily changed for the current function call.
See tar_config_get() and tar_config_set() for details
about how to set the data store path persistently
for a project.
A named integer vector of branch indexes.
Other branching:
tar_branch_names(),
tar_branches(),
tar_pattern()
if (identical(Sys.getenv("TAR_EXAMPLES"), "true")) { # for CRAN
tar_dir({ # tar_dir() runs code from a temp dir for CRAN.
tar_script({
library(targets)
library(tarchetypes)
list(
tar_target(x, seq_len(4)),
tar_target(y, 2 * x, pattern = map(x)),
tar_target(z, y, pattern = map(y))
)
}, ask = FALSE)
tar_make()
names <- c(
tar_meta(y, children)$children[[1]][c(2, 3)],
tar_meta(z, children)$children[[1]][2]
)
names
tar_branch_index(names) # c(2, 3, 2)
})
}