Enum EnvVarError 

pub enum EnvVarError {
    NotFound {
        name: String,
    },
    InvalidUtf8 {
        name: String,
    },
    Empty {
        name: String,
    },
}

Errors that can occur when accessing environment variables.

Provides detailed error information for different failure scenarios when working with environment variables, including missing variables, encoding issues, and empty values.

Variants

NotFound

Environment variable is not set

Fields

name: String

InvalidUtf8

Environment variable contains invalid UTF-8 characters

Fields

name: String

Empty

Environment variable is set but contains only whitespace or is empty

Fields

name: String

Trait Implementations

impl Debug for EnvVarError

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

Formats the value using the given formatter.

impl Display for EnvVarError

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

Formats the value using the given formatter.

impl Error for EnvVarError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.