Struct ClosureView 

pub struct ClosureView<'a>(/* private fields */);

What a host may read of a callback.

The body is not here and cannot be: the interpreter walks a tree and the VM runs a lowered function, and calling one is Reentry’s job because only the backend that made a closure can run it.

Implementations

impl ClosureView<'_>

pub fn arity(self) -> usize

How many parameters the closure declares — parameters, not arguments a call must supply, so a defaulted or a variadic one counts like any other.

pub fn is_async(self) -> bool

Whether it was declared async.

Trait Implementations

impl<'a> Clone for ClosureView<'a>

fn clone(&self) -> ClosureView<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Copy for ClosureView<'a>

impl<'a> Debug for ClosureView<'a>

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

Formats the value using the given formatter.