If you get the You can’t change part of an array error in Microsoft Excel, this post will help you fix the error. An array is essentially a collection of items ...

It's marginally more efficient: While the difference is negligible, the double-unary operator can be more efficient in ...

Excel multiplies the items in the first array (cost price) by the corresponding items in the second array (units sold) and then sums the results to give you the total. It is immediately clear what the ...