Method is_null

crates/wasmtime/src/runtime/values.rs:871–878

(&self)

    /// Is this a null reference?
    #[inline]
    pub fn is_null(&self) -> bool {
        match self {
            Ref::Any(None) | Ref::Extern(None) | Ref::Func(None) | Ref::Exn(None) => true,
            Ref::Any(Some(_)) | Ref::Extern(Some(_)) | Ref::Func(Some(_)) | Ref::Exn(Some(_)) => {
                false
            }
        }
    }

    /// Is this a non-null reference?
    #[inline]