stop_if_dne

stop_if_dne

Usage

stop_if_dne(file)

Arguments

file

file path to check

Value

Invisibly returns NULL; errors if file does not exist.

See also

Other path helpers: check_in_paths(), check_out_paths(), eval_cmd(), mkdir_if_dne(), safe_to_write(), stop_if_e()

Examples

stop_if_dne(tempdir())