For developers only: get the environment of the current target.
For developers only: get the environment where a
target runs its command. Designed to be called
while the target is running. The environment
inherits from tar_option_get("envir").
tar_envir(default = parent.frame())
default |
Environment, value to return if |
Most users should not use tar_envir() because accidental
modifications to parent.env(tar_envir()) could break the pipeline.
tar_envir() only exists in order to support third-party interface
packages, and even then the returned environment is not modified.
If called from a running target, tar_envir() returns
the environment where the target runs its command.
If called outside a pipeline, the return value is
whatever the user supplies to default
(which defaults to parent.frame()).
Other utilities:
tar_active(),
tar_call(),
tar_cancel(),
tar_definition(),
tar_group(),
tar_name(),
tar_path(),
tar_seed(),
tar_store()
tar_envir()
tar_envir(default = new.env(parent = emptyenv()))
if (identical(Sys.getenv("TAR_EXAMPLES"), "true")) {
tar_dir({ # tar_dir() runs code from a temporary directory.
tar_script(tar_target(x, tar_envir(default = parent.frame())))
tar_make(x)
tar_read(x)
})
}Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.