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…

I use Puppeteer for web crawling. I had hoped to someday put together a guide on how to use Puppeteer, but in the meantime, I have been hearing a lot about Playwright as a browser manipulation tool similar to Puppeteer. Then I started thin…

The API I wanted to use was written in GraphQL. Since this was my first time using GraphQL, I thought I would make a brief note on how to use GraphQL from the client side. What is GraphQL? GraphQL is an API specification developed by Faceb…

Git is difficult.... I thought I could do it by making a coping cheat sheet, but no luck.... Whenever there is a problem, we don't know what to do. There are multiple ways to write the same thing across commands, but this can be confusing …

This is a personal note explaining how a website uses cookies and sessions to keep users connected to the site. These are rough conceptual notes, not exact specifications. Problems with HTTP communication HTTP communication is a one-time, …

I was editing the Serverless Framework configuration YAML, looking at the following sample from the official site. When I finished editing and ran the file, it didn't work, and when I looked closely, I found that "arn: arn:xx" was actually…

I thought I could no longer open settings.json after settings were made via GUI, but I was able to open it with the following. [File]-[Basic Settings]-[Settings] Click on the "{}" icon in the upper right tab I was looking for the "edit in …

I saw this because a family member told me that when he tried to print with Chrome, the text and layout were messed up and would not print properly. When I tried it, it was indeed strange. The layout is completely wrong and the text is som…

Basic authentication is an easy way to restrict access to a site. Basic authentication is convenient, but it is problematic because the browser does not remember the ID and password and you have to enter them each time, or anyone can acces…