'dict' object is not callable上述代码出现struct CanGoRight { .. }
impl CanGoRight {
fn move_right_by(self, steps: usize) -> MustGoLeft {
// Note: self is consumed and only `MustGoLeft` methods are allowed
MustGoLeft{steps: steps}
}
}
struct MustGoLeft {
steps: usize;
}
impl MustGoLeft {
fn move_left_by(self, steps: usize) -> Result<CanGoRight, MustGoLeft> {
// Totally making this up as I go here...
// If you haven't moved left at least the same amount of steps,
// you must move a bit further to the left; otherwise you must
// switch back to `CanGoRight` again
if steps < self.steps {
Err(MustGoLeft{ steps: self.steps - steps })
} else {
Ok(CanGoRight{ steps: steps - self.steps })
}
}
fn open_box(self) -> MustGoLeftCanCloseBox {..}
}
let foo = foo.move_right_by(10); // can't move right anymore
错误。我正在使用python 2（Anaconda）。