redux-saga/effects中的关键字:fork,call, put,takeEvery,takeLatest,all
1.fork创建一个新的进程或者线程,并发发送请求。function*user(){yieldtakeEvery('FETCH_REQUEST',fetch_user);//监听FETCH_REQUESTaction}//并发发送请求function*fetch_user(){const[users,todos]=[yieldfork(fetchResource,'https://jsonplac