Learn the difference between Excel COUNT and COUNTA, plus TEXTBEFORE and TEXTAFTER tricks, so you clean text and totals with ...

There are many ways to find and retrieve data from a table or range based on a lookup value. In fact, because Microsoft often comes up with new, modernized alternatives, there are too many ways! So, ...

The FIND function allows you to find a text string within another. It returns the position at which a character or string begins within another text string. The output of the above function will be 5, ...

Formulas are powerful tools for performing calculations and analyzing data in Excel. In this beginner’s guide, you’ll learn how to use formulas and explore some popular built-in functions. One of the ...

You will most often use Bash functions to make your shell life easier; instead of typing out complex command pipelines, create a function and inject arguments. You'd place these in your bashrc file, ...

The three most common open source technologies for writing data science programs are Python, SciLab, and R. Here's how to write program-defined functions in R. There's no clear definition of the term ...