single | single ensures that only one instance of your program is running | Configuration Management library

I am trying to use dotenv and jest together, and run into an error immediately.

A single test file, tests/authenticationt.test.ts with only

What's the point of the name of a single file vue component?

In this example:

State of the application:

• A single virtual machine which runs an apache server.
• Application exposed via the virtual machine's public IP (not behind a loadbalancer)

I have an healthprobe endpoint running that needs probed every few seconds to see if the app is up, and trigger an alert in case it is not.

What are my options? I want to get the healthprobe up and running first, before I move to a virtual machine scale set and a load balancer.

I am trying to write a macro that will copy from a list of 100 rows (9 cells each) into a single row, then run solver on it, and then copy the values to another spot in the workbook.

The below code works for one line, but everything that i have found online appears to be for paste sequential rows, not copying them and pasting them into the same row to be operated on.

Any help would be greatly appreciated.

Thanks

While studying OpenCV, I realized that whenever I blend two images the colors of scr2 have changed in some way(depends on the colors of scr1).

I know this is not an informative and clear way to explain my issue, however; I don't know how to describe this issue since I have no expertise with colors so I would like to show you what I meant with images and code.

The input image: Input image

I am trying to use beginMoveColumns to move a single column over in a QTableView, but it doesn't work properly in my example below. The cell selections get shuffled and column widths don't move. Moving rows using the same logic seems to work correctly. What am I doing wrong?

Video: https://www.screencast.com/t/5UJ0iByZCEE

I'm a student learning about database design and currently learning about the relationships of - one-to-one, one-to-many, many-to-many. I understand the concept well enough, but feel like I'm lacking experience/information on how it would be implemented in a real production scenario.

My question is this

If I have a blog website with a Blog Post as an entity and comments for each blog post, how would you handle the comments in the database?`

Would you use a one-to-many relationship and just store all the comments in a single table. Then link those comments to each blog post and user who created it?

What if each comment had a sub-comment? Would you create a separate table for sub-comments and link it to a single comment? Would that cause too much overhead and confusion within the DB itself?

I get the concepts and all, but don't understand best practices for handling what seems like basic stuff.

Thanks in advance!

I am trying to create an app in which the user has the option to query the database by entering information into one of two entry boxes. I want to be able to use a single select statement and conditionally query the database based on what box the user enter their information into. I currently am trying to use a CASE clause, but I believe that it is running into an error when I try to include a WHERE clause in the THEN argument. Here is what I am currently working with:

My Question: What exactly does “compile-time” mean? I present my understanding below and where I am getting confused.

Compilation is the process that generates a single executable .exe file from the .vb file. There are several ways to do this, for example by using the VBC.EXE command from the developer command window or MSDOS. The way I understand “compile-time” is that it is time when such a command gets executed and the exe file is generated. The following are the what I find confusing:

1. When I write Dim i = 5, the compiler infers or “knows” that the variable “i” is an integer.
2. If I want to print an integer or a string using the Writeline method of the console class then the compiler automatically determines which overloaded version it should call. So in this case also the compiler “knows” – this is also known as compile-time polymorphism.

My confusion: Since in both the above cases the compiler infers or knows the type of variable or the version of the overloaded method to call just after we have finished typing the sentence, is this also called compile-time? We have not given any sort of compilation command here.

1. Another confusion on the definition of compile-time refers to the case when we explicitly define overloaded methods. In the case of the writeline method, we know from the pop-up given by intellisense that immediately after we have finished typing the sentence the version with the correct signature is called. Now, when we define overloaded methods does the compiler know which version to call when we call the function (depending on signature) somewhere in the program right after we have finished typing the code? Or does the compiler know this after the exe file has been generated? This is a case of compile-time polymorphism. But then which time or which step is the “compile-time”?