Function write_dir 

pub fn write_dir(
    net: &Network,
    to: &str,
    out_dir: impl AsRef<Path>,
) -> Result<Vec<String>>

Write net into the directory out_dir as the named directory-shaped format: the directory sibling of write_as, sharing its name-dispatch role for the bindings. PyPSA CSV (pypsa-csv/pypsa) is the one such format today; a text format name is rejected by name, pointing at write_as. Returns the write’s fidelity warnings.

Errors

Error::UnknownFormat for a non-directory format name; the writer’s own Error otherwise.