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Backend Development SWE 432, Fall 2019 Web Application Development Review: Async Programming Example Go get a Go get a Go get a Go get a Go get a candy bar candy bar candy bar candy bar candy bar Go get a Go get a Go get a Go get a Go get a 1 second eachcandy bar candy bar candy bar candy bar candy bar thenCombine Group all Twix Group all 3 Group all Group all Group all Musketeers MilkyWay MilkyWay Dark Snickers 2 seconds each when done Eat all the Twix Explain example LaToza GMU SWE 432 Fall 2019 !2 Review: Async/Await • Rules of the road: • You can only call await from a function that is async • You can only await on functions that return a Promise • Beware: await makes your code synchronous! async function getAndGroupStuff() { ... ts = await lib.groupPromise(stuff,"t"); ... } LaToza GMU SWE 432 Fall 2019 !3 Logistics • HW2 released • Due 10/7 before class LaToza GMU SWE 432 Fall 2019 !4
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