I had the opportunity to work with Excel, which has hundreds of worksheets, and I tried to sort the worksheets by name because it was difficult to find the desired sheet. But Excel doesn't have the ability to sort worksheets by name. I end…

Generics has been included since version 1.18 of the Go language. To the extent that I use the Go language, I thought I would never use Generics because I don't write generic functions and the function descriptions are long. Useful feature…

I was using shell scripts and the scripts were getting long and hard to read, so I tried to summarize them with functions. However, the return values of shell script functions are different from those of functions in other programming lang…

When I started learning SQL, the window functions (analytic functions) were the most difficult to understand. Although you do not need to use the window function when using a database simply as a place to store and retrieve data, it is a v…