Cancel a target mid-build under a custom condition.
Cancel a target while its command is running if a condition is met.
tar_cancel(condition = TRUE)
condition |
Logical of length 1, whether to cancel the target. |
Must be invoked by the target itself. tar_cancel()
cannot interrupt a target from another process.
Other utilities:
tar_active(),
tar_call(),
tar_definition(),
tar_envir(),
tar_group(),
tar_name(),
tar_path(),
tar_seed(),
tar_store()
if (identical(Sys.getenv("TAR_EXAMPLES"), "true")) {
tar_dir({ # tar_dir() runs code from a temporary directory.
tar_script(tar_target(x, tar_cancel(1 > 0)))
tar_make() # Should cancel target x.
})
}Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.