What's the most useful keyboard shortcuts you know?

Answer 1

This list may not be supported on all editors or IDE, but it's really common (for PCs/Laptops):
Ctrl + C - Copy,
Ctrl + V - Paste,
Ctrl + X - Cut,
Ctrl + A - Select all text,
Ctrl + Home - Go to beginning of file,
Ctrl + End - Go to end of file,
Ctrl + Z - Undo,
Ctrl + Y - Redo
Ctrl + N - New,
Ctrl + S - Save,
Ctrl + O - Open
Ctrl + P - Send the file to default printer
Ctrl + Tab - Navigate through the files tabs
And many more I may forget or am not aware of :)

Answer 2

Ctrl + another key does many things for you.
My favorite is Ctrl + Z. 😉
Also, you might want to try Alt+F4, preferably after you have written a long piece of code that has gone through many hours of debugging, but also before you save your work. 😀😀
(FYI, did you know that before Windows 8 the entire computer was controllable via only the keyboard?)

Answer 3

https://code.sololearn.com/WPTQZK80uH2Z/?ref=app