Method discard

crates/vm/src/builtins/set.rs:333–335

(&self, item: &PyObject, vm: &VirtualMachine)

    }

    fn discard(&self, item: &PyObject, vm: &VirtualMachine) -> PyResult<bool> {
        self.retry_op_with_frozenset(item, vm, |item, vm| self.content.delete_if_exists(vm, item))
    }

    fn clear(&self) {
        self.content.clear()