Allora – Use promises on any JavaScript object • Hacker News Board

Re: Allora – Use promises on any JavaScript object

#21

Post by egeozcan » Tue, Jul 19, 2016, 11:44 AM UTC

gianlucaguarini wrote: post #16

c-smile wrote: post #10

Earlier quoted context omitted.

So what does this thatWindow.setInterval(100).then( foo ) mean exactly? How many times the foo() will be called? And how to stop that interval?

foo will be called only once (see my answer above). I am working on another script to achieve event streams using es6 generators let's keep in touch

    promisifiedWindow.setInterval(200).then(x => console.log("res:", x));
    -> Promise {[[PromiseStatus]]: "pending", [[PromiseValue]]: undefined}
    >> VM310:1 res: undefined

How do you cancel the interval?

Re: Allora – Use promises on any JavaScript object

#22

Post by nippur72 » Tue, Jul 19, 2016, 11:48 AM UTC

nice small lib as you'd expect from @gianlucaguarini (of Riot.js fame).

Also, it's async/await ready:

  const allora = require('allora')
  const myGlobal = allora(global)
  
  async function foo() {
     console.log("start")
     await myGlobal.setTimeout(2000)
     console.log("end")
  }  

  foo()

Re: Allora – Use promises on any JavaScript object

#23

Post by gianlucaguarini » Tue, Jul 19, 2016, 11:51 AM UTC

egeozcan wrote: post #21

gianlucaguarini wrote: post #16

Earlier quoted context omitted.

foo will be called only once (see my answer above). I am working on another script to achieve event streams using es6 generators let's keep in touch

promisifiedWindow.setInterval(200).then(x => console.log("res:", x)); -> Promise {[[PromiseStatus]]: "pending", [[PromiseValue]]: undefined} >> VM310:1 res: undefined How do you cancel the interval?

At moment it's not possible and it does not make any sense to use a setInterval with a promise in return. But I will think about a simple solution to clear the timer functions

Re: Allora – Use promises on any JavaScript object

#24

Post by gianlucaguarini » Tue, Jul 19, 2016, 12:45 PM UTC

egeozcan wrote: post #21

gianlucaguarini wrote: post #16

Earlier quoted context omitted.

foo will be called only once (see my answer above). I am working on another script to achieve event streams using es6 generators let's keep in touch

promisifiedWindow.setInterval(200).then(x => console.log("res:", x)); -> Promise {[[PromiseStatus]]: "pending", [[PromiseValue]]: undefined} >> VM310:1 res: undefined How do you cancel the interval?

Ok with this it should be possible https://github.com/GianlucaGuarini/allora/pull/3

Re: Allora – Use promises on any JavaScript object

#25

Post by pythonistah » Tue, Jul 19, 2016, 12:59 PM UTC

nilliams wrote: post #19

JonathonW wrote: post #12

Earlier quoted context omitted.

Per Can I Use [1], promises are in 74% of browsers (only current major browser not supporting them is IE11) and proxies are in 57% of browsers. Promise is pretty easily polyfilled for older browsers; proxies are more problematic and I don't know whether or not any of the existing proxy polyfills will work with Allora. [1] http://caniuse.com/

What about IE8-10? I agree with pythonistah, that can-i-use data doesn't really map to real-world usage.

Perhaps they only collect data from browsers hitting their web site?