Visual studio Code - prevent same file opening twice

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It's happened a few times before that I've opened the same file twice and forgotten about it. Meaning I was editing the same file in both panes, which means two versions of the same file. This led to bugs and me not understanding why me code was not being run properly.

Is there a setting which prevents having the same file open twice?

How do I open the same File twice in Visual Studio Code?

First, you can click on the divider bar at the top of the scroll bar on the right side of your editor window. Dragging that bar down divides your code window into two panes (one on top of the other), which you can scroll through independently.

How do you stop a loop code in Visual Studio?

You can stop any running command by pressing Ctrl + C on your keyboard.