Enum Validation 

pub enum Validation {
    Auto,
    Custom(String),
    Disabled,
}

Validation behavior for an argument.

Controls whether the framework validates the argument before calling the handler, and what error message is shown on failure.

Variants

Auto

Framework validates and sends a default error message.

Custom(String)

Framework validates and sends the custom error message.

Disabled

No validation — tab-completion still works, but the handler receives the raw value and manages errors itself.

Trait Implementations

impl Clone for Validation

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Validation

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

Formats the value using the given formatter.