Method __length_hint__

crates/vm/src/builtins/map.rs:55–61

(&self, vm: &VirtualMachine)

impl PyMap {
    #[pymethod]
    fn __length_hint__(&self, vm: &VirtualMachine) -> PyResult<usize> {
        self.iterators.iter().try_fold(0, |prev, cur| {
            let cur = cur.as_ref().to_owned().length_hint(0, vm)?;
            let max = core::cmp::max(prev, cur);
            Ok(max)
        })
    }

    #[pymethod]
    fn __reduce__(zelf: PyRef<Self>, vm: &VirtualMachine) -> PyResult<PyTupleRef> {