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| // - Write an example of a test case to make sure it works | |
| // You have a set of expensive javascript asynchronous tasks to run, e.g. you need to make 10,000 ajax requests. | |
| // You need a function that takes a set of tasks, and a concurrency limit (e.g. "5 tasks at a time") and runs the tasks until all are complete | |
| // - Design the interface for this function, accounting for ease of use, reusability, error handling, and testing | |
| // - Implement out the function | |
| // - Write an example of a test case to make sure it works | |
| // - What would you do to make it production ready if you had a week to work on it? | |
| function runSet (arrOfFunctions){ | |
| let resultsArr = []; | |
| let currentlyRunningCount; | |
| let allDone = [] | |
| //let allDone = new Promise(resolve => { | |
| // do some stuff | |
| arrOfFunctions.forEach( (func,i)=>{ | |
| const prom = new Promise ((resolve)=>{ | |
| runOrWait(func,i); | |
| function runOrWait (func,i){ | |
| if(currentlyRunningCount>5) { | |
| //wait and check letter; | |
| setTimeout(200,()=>runOrWait(func,i)); | |
| } else { | |
| currentlyRunningCount++ | |
| func.then((res)=>{ | |
| //handle breaks | |
| resultsArr.splice(i,0,res); | |
| currentlyRunningCount--; | |
| resolve(); | |
| }); | |
| } | |
| } | |
| } | |
| allDone.push(prom) | |
| }); | |
| return Promise.all([...allDone]).then(()=>{ | |
| return resultsArr | |
| }) | |
| // resolve(); | |
| // }) | |
| // return resultsArr; | |
| // Promise.all( | |
| // [funcA,FuncB] | |
| // ).then(results) | |
| // [a,b,c,d,e,f,g,] | |
| } | |
| // const resultsArr = ()=>funSet([ | |
| // funcA, | |
| // funcB, | |
| // ]); |
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| // You have a set of expensive javascript asynchronous tasks to run, e.g. you need to make 10,000 ajax requests. | |
| // You need a function that takes a set of tasks, and a concurrency limit (e.g. "5 tasks at a time") and runs the tasks until all are complete | |
| // - Design the interface for this function, accounting for ease of use, reusability, error handling, and testing | |
| // - Implement out the function | |
| // - Write an example of a test case to make sure it works | |
| // - What would you do to make it production ready if you had a week to work on it? | |
| <html> | |
| <script> | |
| </script> | |
| <body>Hello</body> | |
| </html> |
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