Enum EnvOr 

pub enum EnvOr {
    Value(String),
    Env(String),
}

A value that can be either a direct string or an environment variable reference.

In TOML config, users can write:

url = "postgres://localhost/db"           # Direct value
url = { env = "DATABASE_URL" }            # Environment variable

Variants

Value(String)

Direct string value

Env(String)

Environment variable name to resolve

Implementations

impl EnvOr

pub fn resolve(&self) -> Result<String, Error>

Resolve the value, looking up environment variable if needed

pub fn resolve_optional(&self) -> Result<Option<String>, Error>

Resolve to an optional value (returns None for missing env vars)

Trait Implementations

impl Clone for EnvOr

fn clone(&self) -> EnvOr

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for EnvOr

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for EnvOr

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.