tar_branch_index: Integer branch indexes

In targets: Dynamic Function-Oriented 'Make'-Like Declarative Pipelines

Integer branch indexes

Description

Get the integer indexes of individual branch names within their corresponding dynamic branching targets.

Usage

tar_branch_index(names, store = targets::tar_config_get("store"))

Arguments

names	Character vector of branch names.
store	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.

Value

A named integer vector of branch indexes.

See Also

Other branching: tar_branch_names(), tar_branches(), tar_pattern()

Examples

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)
})
}

targets documentation built on April 12, 2025, 1:11 a.m.