functional-javascript / functionales Goto Github PK

// 동시에 users와 posts 출발
const res1 = awiat concurrency({
  users: _=> query(...),
  posts: _=> query(...)
});
//{
//  users: [row, row, row, ...]
//  posts: [row, row, row, ...]
//}

// await를 만날 때마다 하나씩 출발
const res2 = {
  users: await query(...),
  posts: await query(...)
}
//{
//  users: [row, row, row, ...]
//  posts: [row, row, row, ...]
//}

const res2 = 무엇 {
// ...
}

function *valuesIter(obj) {
  for (const key in obj) yield obj[key];
}
const users = {
  5: { id: 5, name: 'YB' },
  19: { id: 19, name: 'BX' },
  27: { id: 27, name: 'MD' }
};
for (const val of valuesIter(users)) log(val.name);
// YB
// BX
// MD

Object.assign(ObjIter, {
  values: ObjIter(function *(coll) {
    if (!coll) return;
    for (const key in coll) yield coll[key];
  }),
  entries: ObjIter(function *(coll) {
    if (!coll) return;
    for (const key in coll) yield [key, coll[key]];
  })
});