Say I can pass several commands to my program, and each command corresponds to a function.How can I call this function without a lot of if-else? To add a little seasoning, I also need to pass ...

R data.table code becomes more efficient — and elegant — when you take advantage of its special symbols and functions. With that in mind, we’ll look at some special ways to subset, count ...

Excel's GROUPBY function lets you group and aggregate data based on certain fields in your table of data. It also offers arguments that allow you to sort and filter your data, so you can tailor the ...