Enum Error

pub enum Error {
    UnknownShortOption(char),
    UnknownLongOption(String),
    AmbiguousLongOption(String),
    MissingOptionArgument(String),
    UnexpectedOptionArgument(String),
    ConflictingSources,
    UnnegatableShortOption(char),
    UnnegatableLongOption(String),
    MissingCommandString,
}

Error in command line parsing

Variants

UnknownShortOption(char)

Short option that is not defined in the option specs

UnknownLongOption(String)

Long option that is not defined in the option specs

AmbiguousLongOption(String)

Long option that matches the prefix of more than one option name.

MissingOptionArgument(String)

Option missing an argument

UnexpectedOptionArgument(String)

Argument specified to an option that does not take an argument

ConflictingSources

The -c and -s options used together

UnnegatableShortOption(char)

Negated short option that is not a shell option

UnnegatableLongOption(String)

Negated long option that is not a shell option

MissingCommandString

The -c option without a command string

Trait Implementations

impl Clone for Error

fn clone(&self) -> Error

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Error

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

Formats the value using the given formatter.

impl Display for Error

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

Formats the value using the given formatter.

impl Error for Error

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 Error

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

impl StructuralPartialEq for Error