Last active
July 27, 2020 13:44
-
-
Save mishelashala/2aabf17537ebf2a8f71051a158aa3bdd to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
// Now this a thunk. | |
// Yeah, computer science b*tch! | |
// PromisedNumber :: () -> Promise<number> | |
const PromisedNumber = () => new Promise(function (fulfill, reject) { | |
setTimeout(() => { fulfill(10) }, 500) | |
}) | |
// PromisedString :: () -> Promise<string> | |
const PromisedString = () => new Promise(function (fulfill, reject) { | |
setTimeout(() => { fulfill(10) }, 1000) | |
}) | |
console.log('start') | |
const AsyncPipeline = () => { | |
// we don't actually need these two variables | |
const promisedNumber = PromisedNumber() | |
const promisedString = PromisedString() | |
promisedNumber.then( | |
// using arrow functions to "save" some visual space | |
(value) => { | |
console.log('number: ', value) | |
promisedString.then( | |
(value) => { console.log('string:', value) }, | |
(err) => { console.log('error:', err.message) } | |
) | |
}, | |
(err) => { console.log('error: ', err.message) } | |
) | |
} | |
console.log('finish') |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment