Enum EnvVarNameError 

pub enum EnvVarNameError {
    Empty,
    StartsWithDigit,
    InvalidCharacter,
}

Validation errors for environment variable names.

Variants

Empty

The variable name was empty.

StartsWithDigit

The variable name started with an ASCII digit.

InvalidCharacter

The variable name contained an unsupported character.

Trait Implementations

impl Clone for EnvVarNameError

fn clone(&self) -> EnvVarNameError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for EnvVarNameError

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

Formats the value using the given formatter.

impl Display for EnvVarNameError

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

Formats the value using the given formatter.

impl Error for EnvVarNameError

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.

impl PartialEq for EnvVarNameError

fn eq(&self, other: &EnvVarNameError) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for EnvVarNameError

impl StructuralPartialEq for EnvVarNameError