Enum DirectionArg 

pub enum DirectionArg {
    Out,
    In,
    Both,
}

CLI form of the traversal-direction selector. clap’s ValueEnum refuses an unrecognised value with a typed error naming the accepted values — never a silent fallback to both.

Variants

Out

In

Both

Trait Implementations

impl Clone for DirectionArg

fn clone(&self) -> DirectionArg

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for DirectionArg

impl Debug for DirectionArg

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

Formats the value using the given formatter.

impl Eq for DirectionArg

impl From<DirectionArg> for TraversalDirection

fn from(d: DirectionArg) -> Self

Converts to this type from the input type.

impl PartialEq for DirectionArg

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for DirectionArg

impl ValueEnum for DirectionArg

fn value_variants<'a>() -> &'a [Self]

All possible argument values, in display order.

fn to_possible_value<'a>(&self) -> Option<PossibleValue>

The canonical argument value.

fn from_str(input: &str, ignore_case: bool) -> Result<Self, String>

Parse an argument into Self.