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Cancel a target while its command is running if a condition is met.

Usage

tar_cancel(condition = TRUE)

Arguments

condition

Logical of length 1, whether to cancel the target.

Details

Must be invoked by the target itself. tar_cancel() cannot interrupt a target from another process.

See also

Examples

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.
})
}