Exercise

Using parLapply()

An online seller has a hundred thousand products on their website. For the next Big Bumper Sale, they have announced a 20% discount on everything.

The online seller has hired you as a Data Engineer to handle price updates. Your client has asked you to update these prices using parallelization. You have the price_list and the function that discounts the price, discount_fun(), in your workspace. You need to apply discount_fun() to all elements of price_list. The parallel package has already been loaded.

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Set up a cluster with three cores.

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Instructions 1/3

Exercise