This loop will use the return statement to break the loop and it is used to avoid the compile-time error and hence this loop returns the set of values or an array of values in which the code is executed within the “for” loop.

step_increment: this parameter is used to specify the count to repeat the set of code when the condition is satisfied which specifies how many numbers of times after the initial count specified must be repeated according to the given condition and the value of this parameter will be altered after every iteration.

specific_condition: this parameter is used to specify the logical condition where if this condition is satisfied then it executes the code within the loop.

Therefore, the code starts executing from this given initial count value in the “for” loop.

intial_value: this parameter is used to specify the initial count value for the declared variable to start the iteration count and keep the track of iteration.

In Typescript, for loop has the same syntax as other programming languages: for(initial_value, specific_condition, step_increment)

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.Web development, programming languages, Software testing & others 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 Removing optimizations that we had done on purpose

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

Array for each typescript