Struct NoopEnv 

pub struct NoopEnv;

NoopEnv is a no-op implementation that always returns None/empty.

This is used when no environment is configured.

Trait Implementations

impl Clone for NoopEnv

fn clone(&self) -> NoopEnv

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for NoopEnv

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for NoopEnv

fn default() -> NoopEnv

Returns the “default value” for a type.

impl Env for NoopEnv

fn var(&self, _key: &str) -> Option<String>

Get an environment variable.

fn vars(&self) -> HashMap<String, String>

Returns a hashmap of (variable, value) pairs of strings, for all the environment variables of the current process.

fn home_dir(&self) -> Option<PathBuf>

Return the path to the users home dir, returns None if any error occurs.

impl Copy for NoopEnv