Excel’s BYCOL() and BYROW() functions evaluate data across columns and rows, returning an array result set allowing you to bypass a lot of work. Most Microsoft Excel functions are autonomous—one ...

Excel doesn’t have a built-in AVERAGEIF() function, but you can still average values, conditionally. Excel has SumIf and CountIf, but no AverageIf. However, with a little array magic, you can get ...

* ```#acc``` represents a value that you want to include in your single output when you reduce an array. * ```#index``` represents the current array index, along with array index numbers ```#index2, ...

JavaScript’s arrays can hold heterogeneous types, change size on the fly, and readily insert or remove elements. Traditional methods like slice, splice, and push/pop do this by operating on the array ...

array Creates an array of items. All items should be of the same type. If no items are specified, an empty string array is the default. Same as a [] creation operator. at Finds the element at an array ...