javascript - 无法使用选择器从Redux存储中获取值

Question

我无法将redux存储值获取到props，我签入了reducers、store、action和js文件，一切正常。但同时
将选择器传递给MapStateToprops。
误差
错误：uncaught（in promise）类型错误：对象（…）不是函数

at selectHosDeatilsResult (AddAppointment.js?0a10:319)

import React from 'react';
import { connect } from 'react-redux';
import { createSelector } from 'reselect';

 class example extends React.PureComponent {
  render() {
    console.log('this.props', this.props);
 return (
<div>
</div>
);
}
}
const selectHosDeatilsResult = () => createSelector(
  makeHospitalResult(),
  value => ({ value }),
);

const mapStateToProps = state => ({
details: selectDeatilsResult()(state),
});
export default connect(mapStateToProps, null)(example);

减速器代码

const initialState = fromJS({
  hospitalResult: null,
});

export default function Reducer(state = initialState, action) {
  switch (action.type) {

   case HOSPITAL_SUCCESS:
return state.set('requesting', false).set('hospitalResult',action.payload);


        default: return state;
      }
    }

选择器代码

import { createSelector } from 'reselect';
const SelectAppointment = (state) => state.get('appointments');

const makeHospitalResult = () => createSelector(
  SelectAppointment,
  (state) => state.get('hospitalResult')
);

Answer 1

如果您正在使用热重新加载，请确保重新启动开发服务器。我以前也遇到过这样的问题：）