Enum ErrorKind

pub enum ErrorKind {
    InvalidArgument(String),
    InvalidArgumentCount,
    InvalidExpression,
    UnexpectedOption(String),
    UnexpectedCommand(String),
    MissingOption(String),
    Other,
    DisplayHelp(String),
    DisplayVersion(String),
    // some variants omitted
}

Types of errors.

Variants

InvalidArgument(String)

The value passed to the argument is invalid.

InvalidArgumentCount

Invalid number of arguments being passed.

InvalidExpression

The expression is invalid.

UnexpectedOption(String)

The option wasn’t expected in the current context

UnexpectedCommand(String)

The command wasn’t expected in the current context

MissingOption(String)

The option is required.

Other

An error no listed.

DisplayHelp(String)

Not an actual error used for convenience.

Display a help message.

DisplayVersion(String)

Not an actual error used for convenience.

Display a version message.

Trait Implementations

impl Clone for ErrorKind

fn clone(&self) -> ErrorKind

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ErrorKind

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

Formats the value using the given formatter.

impl Display for ErrorKind

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

Formats the value using the given formatter.

impl From<ErrorKind> for Error

fn from(kind: ErrorKind) -> Self

Converts to this type from the input type.

impl PartialEq for ErrorKind

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

impl StructuralPartialEq for ErrorKind