从不同函数访问最新状态值

# 示例代码（Python）
global_state = 0

def update_state(new_value):
    global global_state
    global_state = new_value

def get_state():
    return global_state

# 示例代码（Python）
class StateManager:
    _instance = None

    def __new__(cls):
        if cls._instance is None:
            cls._instance = super(StateManager, cls).__new__(cls)
            cls._instance.state = 0
        return cls._instance

    def update_state(self, new_value):
        self.state = new_value

    def get_state(self):
        return self.state

// 示例代码（JavaScript/TypeScript）
import { createStore } from 'redux';

const initialState = { state: 0 };

function reducer(state = initialState, action) {
    switch (action.type) {
        case 'UPDATE_STATE':
            return { ...state, state: action.payload };
        default:
            return state;
    }
}

const store = createStore(reducer);

function updateState(newValue) {
    store.dispatch({ type: 'UPDATE_STATE', payload: newValue });
}

function getState() {
    return store.getState().state;
}