Type Alias Command 

pub type Command<S, R> = Option<Arc<dyn Fn(&CommandContext<S, R>) -> Result<R, CommandSyntaxError> + Send + Sync>>;

Aliased Type

pub enum Command<S, R> {
    None,
    Some(Arc<dyn Fn(&CommandContext<S, R>) -> Result<R, CommandSyntaxError> + Sync + Send>),
}

Variants

None

No value.

Some(Arc<dyn Fn(&CommandContext<S, R>) -> Result<R, CommandSyntaxError> + Sync + Send>)

Some value of type T.