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How do I store functions with their parameters in an array and execute them sequentially?


How do I store functions with their parameters in an array and execute them sequentially?

By : Nicholas Harteau
Date : November 21 2020, 03:00 PM
hope this fix your issue I'm trying to store a series of functions in an array with their parameters, and then execute them sequentially. I've been using this question: How to chain execution of array of functions when every function returns deferred.promise? And a specific answer to this question: http://plnkr.co/edit/UP0rhD?p=preview.
code :
.then(someFunction(...))
.then(() => someFunction(...))


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jQuery: execute array of functions sequentially (both deferreds and non-deferreds)

jQuery: execute array of functions sequentially (both deferreds and non-deferreds)


By : Alvin Ryan Parker
Date : March 29 2020, 07:55 AM
Any of those help Very astute, jQuery.when is what you're looking for. It takes either a promise or a normal non-thenable and returns a promise over that value. However, since you have functions and not values here that isn't really required since this is the behavior of .then anyway.
code :
var queue = [syncFunction, syncFunc2, returnsPromiseAsync];

var d = $.Deferred().resolve();
while (queue.length > 0) {
   d = d.then(queue.shift()); // you don't need the `.done`
}
var res = queue.reduce(function(prev,cur){ // chain to res later to hook on done
    return prev.then(cur);
}, $.Deferred().resolve());
var p = $.Deferred();
var res = queue.reduce(function(prev,cur){ // chain to res later to hook on done
    return prev.then(cur);
}, p);
setTimeout(p.resolve.bind(p), 0);
res.then(function() {
    // All functions have now completed
});
function clearQueue(q) {
    var p = $.Deferred();
    setTimeout(p.resolve.bind(p), 0);

    return q.reduce(function(prev,cur){ 
        return prev.then(cur);
    }, p);
}
clearQueue(queue).then(function() {
    console.log("All done");
});
console.log("This runs before any queued function starts");
How to execute promises sequentially, passing the parameters from an array?

How to execute promises sequentially, passing the parameters from an array?


By : Tod Youngblood
Date : March 29 2020, 07:55 AM
Hope that helps You can make the repeated application of .then into a fold pretty neatly if you’re okay with creating as many promises as array elements as is the case in the question:
code :
myArray.reduce(
  (p, x) =>
    p.then(_ => myPromise(x)),
  Promise.resolve()
)
const mapSeries = async (iterable, action) => {
  for (const x of iterable) {
    await action(x)
  }
}

mapSeries(myArray, myPromise)
Promise.mapSeries(myArray, myPromise)
const myArray = [1, 2, 3, 4, 5, 6]

const sleep = ms =>
  new Promise(res => {
    setTimeout(res, ms)
  })

const myPromise = num =>
  sleep(500).then(() => {
    console.log('done: ' + num)
  })

myArray.reduce(
  (p, x) =>
    p.then(_ => myPromise(x)),
  Promise.resolve()
)
Execute functions in array with parameters

Execute functions in array with parameters


By : Grem1in
Date : March 29 2020, 07:55 AM
Hope this helps If you want to iterate through an array of functions and pass in parameters, then only store the function reference. Then call them with parameters as you are doing:
code :
let board;
let hand;

const HandCheckers = [
    CheckForRoyalFlush,
    CheckForStraightFlush,
    /* ... */
]

// or use `HandCheckers.forEach(f => f(board, hand))`
for (let x = 0; x < HandCheckers.length; x ++) {
       HandCheckers[x](board, hand);
}
Unknown length array used to execute promised functions sequentially

Unknown length array used to execute promised functions sequentially


By : desk56987
Date : March 29 2020, 07:55 AM
may help you . You can use Array.reduce to get the previous promise and queue new promise, without the need for waiting.
code :
const arrayReader = ([arrayOfCSVs]) => {
  initialFunction();
  return arrayOfCSVs.reduce((prom, csv) => {
    return prom.then(() => functions(csv));
  }, Promise.resolve()).then(resultX => executeFinalFunction());
}
How to execute 3 functions sequentially?

How to execute 3 functions sequentially?


By : Mihai Radu
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further I have noticed that jQuery does some functions async. For example take a look to this jsFiddle , Try this: Use .done () function
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