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 ...

If you've ever found yourself copying the same formula down hundreds of rows in Excel, you know how tedious it gets. The usual approach, dragging formulas, adjusting cell references, and hoping ...

Excel's fill handle is fine for a few rows, but in a big dataset, it's an error waiting to happen. Why drag and drop when you can automate? The MAP function lets you ...