Assuming you want to return promises, you can use lodash.map() to iterate over the object and have the key available when creating the promise, then use Promise…
What am I doing wrong? An array has numbers as keys.
If all the marginal distributions are continuous, then the joint distribution is continuous? Finding the largest disk within a convex region using Region primitives. In step2() I'm using Bluebird's promise.map. How do I convert an existing callback API to promises?
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To subscribe to this RSS feed, copy and paste this URL into your RSS reader. I need those indexes. @smarx, @WeiRoR: Thanks for the hints, updated my answer. Yeah, never mind, I thought by just using a timeout it would approximate doing an actual async call. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service. Why are all quarks and leptons of this universe the same? How does the highlight.js change affect Stack Overflow specifically? What is this fallacy: “Expecting something to continue just because it has never stopped”. Why did God choose circumcision and Paul cancel it? How to return promise.map (bluebird) inside a promise chain? By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy. Mechanically is there any difference between split and double faced cards? Anyway, with an actual async call to load a file it works wonderfully, thanks for your help. i don't really understand your question, how do you fake an async call with timeout? To learn more, see our tips on writing great answers. I know that this code was working before but now can't get it so. Why can so little digital information be stored on a cassette tape? Ask Question Asked 3 years, 4 months ago. Bluebird is a fully featured JavaScript promises library with unmatched performance. How did Azerbaijan come to be allied with Turkey and Israel?
Black Hole Collision & Gravitational Waves, How to make a curve behave like a squeezed tooth paste (to born from a moving object but to stay on ground). Making statements based on opinion; back them up with references or personal experience. Therefore, in my terminal, I should see something like this: Therefore, I assume the Promise.map is not working at all.
step2() 20 Amp single receptacle on two 15 amp breakers? Also you don't wait for models.User.findAll, call question.addAnswer(ans); twice, potentially try to render an error message multiple times if answers fail to be created, and do not have a generic error handler. And it works!
Here's a visual of the flow I'm trying to achieve. What is the reason to turn sync functions into async in a promise chain in Bluebird? Break promise chain and call a function based on the step in the chain where it is broken (rejected). Stack Overflow for Teams is a private, secure spot for you and
How do they get very young child actors to cooperate? I changed it back, but same outcome. npm install bluebird. your coworkers to find and share information. Viewed 9k times 2. I've tested the chain with many more steps each with a timeout and it worked as expected with the exception of the promise.map in step2(). Did I miss something? Stack Overflow for Teams is a private, secure spot for you and
Motorized speedboat from Technic Catamaran alternate model? You are not calling your resolve callback properly. Your second approach was properly defining Promise to be Bluebird's library and that's why Promise.map() worked, but you were not using Bluebird's promises with mongoose which will work in some cases because of promise interoperability between different types of promises as long as you only use .then() on the promises that come back from mongoose and nothing special like the myriad of Bluebird … How do I access previous promise results in a .then() chain? You can map the object's keys into an array and give that to Promise.map(): You can also convert the object to an array, using _.toPairs, then you should be able to use the Promise.map methods. A message from our CEO about the future of Stack Overflow and Stack Exchange. Can a 22 gauge 10 conductor multi-core wire be used in a home Ethernet implementation? I added an explicit note in the docs for .map.. Why did God choose circumcision and Paul cancel it? Bluebird Promise.map is not working. Thank you so much! What will be the data rate/range on this setup? My lazy way of testing. :). Is there a language where there are personal pronouns for the first or second person that have gender? Thanks for contributing an answer to Stack Overflow! Motorized speedboat from Technic Catamaran alternate model? Active 3 years, 4 months ago. Nah that could be only a javascript object; The Overflow #41: Satisfied with your own code. Hello highlight.js! Thanks for contributing an answer to Stack Overflow! I'm using a chain to control flow and can't get promise.map in step2() to wait until all of it's generated promises are resolved. I had indeed forgotten to return the, That works. How did Azerbaijan come to be allied with Turkey and Israel? Read now. - I am Promise from Node city. rev 2020.10.6.37736, Stack Overflow works best with JavaScript enabled, Where developers & technologists share private knowledge with coworkers, Programming & related technical career opportunities, Recruit tech talent & build your employer brand, Reach developers & technologists worldwide, Thanks! And I am using to use Bluebird's API .map to make sure a redirect only happens after all the question.addAnswers(answer) promises are done. Assuming you want to return promises, you can use lodash.map() to iterate over the object and have the key available when creating the promise, then use Promise.all() to execute them. Asking for help, clarification, or responding to other answers. step3(). By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service. Why does Stockfish recommend this bishop exchange early on? Then you warp the async function with callback with new Promise. If you only want to return a value, there is not much benefit to using Promise.map() over forEach. To learn more, see our tips on writing great answers. UPDATE How to return promise.map (bluebird) inside a promise chain? What is the explicit promise construction antipattern and how do I avoid it? I don't understand.
What to do? Making statements based on opinion; back them up with references or personal experience.
Logical conclusion: Use an array.
How to access the correct `this` inside a callback? By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy. You want numbers as keys.
Why would a circuit designer use parallel resistors? Play the long game when learning to code.
Here's a visual of the flow I'm trying to achieve. This is a special structure to hold per-minute stastistics of data over mongoose. Or as a single statement that more closely resembles your desired format.
Your most prominent problem is that createAndAddToQuestion does not return a promise, so map cannot know what to wait for. How do I return the response from an asynchronous call? Availability of vegetarian food in Mongolia.
site design / logo © 2020 Stack Exchange Inc; user contributions licensed under cc by-sa. Should one - moreover can one - defrost a frozen product like this before cooking? Hello highlight.js! In your case resolve() is always called, since you are executing async function for loading the file. You should be doing.
Play the long game when learning to code. Is my interpretation of a quantum field correct? map function for objects (instead of arrays), Node.js quick file server (static files over HTTP). call async function for each array element of a promise result object, make changes and return this object, Promise.map function .then() block getting null before nested promise resolves, Push to external object from inside a map function with a promise, How to map an array, create promises, and break when one resolves, Negation of a statement with an implication, Distinction between scientific and business computing, Why is Microgravity called "Microgravity". Stack Overflow Public questions and answers; Teams Private questions and answers for your team; Enterprise Private self-hosted questions and answers for your enterprise; Jobs Programming and related technical career opportunities; Talent Hire technical talent; Advertising Reach developers worldwide When bluebird converts a module (like xml2js) into a promise based API using promisifyAll then it appends an Async suffix to each function name and adds that function into that object: var module = Promise.promisifyAll(require('xml2js')); // example: xml2js … In general, something with a map is called a functor, the guarantees a map function must hold are basically only that Promise.resolve([1,2,3]).map(x => x) resolves to the same values, and that Promise.resolve([1,2,3]).map(f).map(g) is the same as Promise.resolve([1,2,3]).map(x => g(f(x))).. Promise.map is not working. Ask Question Asked 3 years, 9 months ago. Best way to store a key=>value array in JavaScript? Lost $10K to scammers, found out their home address and want to beat them up real good. Step 2) The next step is to include the bluebird module in your code and promisify the entire MongoDB module. How does the highlight.js change affect Stack Overflow specifically? Why don't self-closing script elements work?
Why is there a space between the left parenthesis and the radical sign? step2() so basically minute should hold the data and minuteIndex should be holding the index.
Does the main character have to be likable? How do I work with the Bluebird error handler?
Goodbye, Prettify.
The Overflow #41: Satisfied with your own code. How can I get the full object in Node.js's console.log(), rather than '[Object]'? I can do it with lodash but bluebird can't somehow. Swapping out our Syntax Highlighter, Responding to the Lavender Letter and commitments moving forward. How do they get very young child actors to cooperate? Why are Trump supporters flying the flag of East Turkistan? Which astronauts or cosmonauts were injured by a hard landing? I can't. Swapping out our Syntax Highlighter, Responding to the Lavender Letter and commitments moving forward. Iterables with Promise.map, Promise.each, and Promise.filter. You don't specify in your question if you are using the Promise.map() callback to return a promise or a value. Why do I see a reflexive pronoun at the end of the sentence? step2() How long do you have to process a turkey after shooting it (hunting)? @naartjie. How can I make it work?
That was a typo.
- I am Map and you ? How can live fire exercises be made safer? - Hey, who are you ? I am trying to build associations between a question and answers. What game is being promoted in this Xbox Games Pass advertisement.
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