Enum FlagNameError 

pub enum FlagNameError {
    Empty,
    InvalidShortFlag,
    InvalidLongFlagName,
    InvalidToken,
}

Validation errors for primitive flag names and tokens.

Variants

Empty

A flag name was empty.

InvalidShortFlag

A short flag was not a single ASCII alphanumeric character.

InvalidLongFlagName

A long flag name was not a plain ASCII flag name.

InvalidToken

A token did not look like a supported primitive flag token.

Trait Implementations

impl Clone for FlagNameError

fn clone(&self) -> FlagNameError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FlagNameError

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

Formats the value using the given formatter.

impl Display for FlagNameError

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

Formats the value using the given formatter.

impl Error for FlagNameError

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 FlagNameError

fn eq(&self, other: &FlagNameError) -> 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 FlagNameError

impl StructuralPartialEq for FlagNameError