Breaking News: Grepper is joining You.com. Read the official announcement!

es6 reduce return promise

Add Answer

Lonely Lizard answered on April 4, 2020 Popularity 9/10 Helpfulness 3/10

answer es6 reduce return promise

related javascript reduce promises

related javascript reduce return array

es6 reduce return promise

Comment

async function slowCounter () {
    const ret = await ([100, 200, 300, 400, 500]).reduce(
        async (promise, wait, idx) => {
            return promise.then(async last => {
                const ret = last + wait
                console.log(`${idx}: waiting ${wait}ms to return ${ret}`)
                await new Promise((res, rej) => setTimeout(res, wait))
                return ret
            })
        }, Promise.resolve(0))
    console.log(ret)
}

slowCounter ()

Popularity 9/10 Helpfulness 3/10 Language javascript

Source: stackoverflow.com

Tags: javascript promise reduce return

Link to this answer
Share Copy Link

Contributed on Sep 01 2020

Lonely Lizard

0 Answers Avg Quality 2/10

Closely Related Answers

javascript reduce promises

Comment

const sum = await [
  Promise.resolve(1),
  Promise.resolve(1),
  Promise.resolve(1)
].reduce(async (previousPromise, itemPromise) => {
  const sum = await previousPromise;
  const item = await itemPromise;
  return sum + item;
}, Promise.resolve(0))

// sum === 3

Popularity 9/10 Helpfulness 4/10 Language javascript

Source: Grepper

Tags: javascript j

Link to this answer
Share Copy Link

Contributed on Apr 04 2020

Gifted Gerenuk

0 Answers Avg Quality 2/10

javascript reduce return array

Comment

var store = [0, 1, 2, 3, 4];

var stored = store.reduce(function(pV, cV, cI){
  console.log("pv: ", pV);
  pV.push(cV);
  return pV; // *********  Important ******
}, []);

Popularity 8/10 Helpfulness 2/10 Language javascript

Source: stackoverflow.com

Tags: javascript j

Link to this answer
Share Copy Link

Contributed on Oct 11 2022

Anh Tuan Pham

0 Answers Avg Quality 2/10

es6 reduce return promise

Contents

More Related Answers

es6 reduce return promise

Closely Related Answers

javascript reduce promises

javascript reduce return array

Grepper

Documentation

Social

Legal

Contact

Oops, You will need to install Grepper and log-in to perform this action.