Enum ArgError 

pub enum ArgError<E> {
    ArgOutOfRange {
        len: usize,
        index: usize,
    },
    Other {
        error: E,
    },
}

Errors that can happen when parsing an argument list.

Variants

ArgOutOfRange

An argument index was specified that was out of range for the number of supported arguments.

Fields

len: usize

The number of available arguments

index: usize

The index we tried to get

Other

Some other kind of error occurred (usually in conversion to a Value)

Fields

error: E

The underlying cause.

Trait Implementations

impl<E: Clone> Clone for ArgError<E>

fn clone(&self) -> ArgError<E>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<E: Debug> Debug for ArgError<E>

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

Formats the value using the given formatter.

impl<E> Display for ArgError<E>

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

Formats the value using the given formatter.

impl<E> Error for ArgError<E>

where Self: Debug + Display,

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

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

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<E> ErrorCompat for ArgError<E>

fn backtrace(&self) -> Option<&Backtrace>

Returns a Backtrace that may be printed.

fn iter_chain(&self) -> ChainCompat<'_, '_>

where Self: AsErrorSource,

Returns an iterator for traversing the chain of errors, starting with the current error and continuing with recursive calls to Error::source.

impl<E> From<E> for ArgError<E>

fn from(other: E) -> Self

Converts to this type from the input type.

impl<E: PartialEq> PartialEq for ArgError<E>

fn eq(&self, other: &ArgError<E>) -> 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<E: Copy> Copy for ArgError<E>

impl<E: Eq> Eq for ArgError<E>

impl<E> StructuralPartialEq for ArgError<E>