The following codes are for comparison between for loop and forEach() using an array of 20 consisting of millions items simple value addition and assignment where the execution times are printed. Is that really true? To prove that using a for loop is more efficient than forEach(), I did the following experiment.Įxperiment: Comparison with Simple Value Addition and Assignment In short foreach loop is used to iterate the array element like any other programming language. foreach loop can be applied on the array, list, set, and map.
By using the foreach loop, we can display the array elements, perform any operation on them, manipulate each element, etc. Removing optimizations that we had done on purpose foreach loop in TypeScript is used to deal with the array elements. I believe the above refactored codes also intend to achieve a better readability and maintainability, but the member of rxjs library rejects the changes and claim that it is Those utility functions greatly improve our productivity in array operations by using functional programming paradigm and they are clearer to read and easier to understand.
So basically, the author would like to refactor the for loop by using forEach() in array utility functions.Īs we know, JavaScript / TypeScript has a set of powerful array utility functions including forEach(), map(), reduce() and so on. Enter fullscreen mode Exit fullscreen mode
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