SQL window functions provide extremely powerful and useful features that let you work with observations more easily. Different types explained here.

Excel has over 475 formulas in its Functions Library, but we've selected the most popular, from date and time functions to mathematics and simple data manipulation.

Hash functions are commonly used data structures in computing systems for tasks such as checking the integrity of messages and authenticating information.

In C# 9 lambda or anonymous methods can have a static modifier. This article talks about static anonymous functions and why they are useful, using code examples to illustrate the concepts.