[mxz3000]

if you have a reasonably good IDE you don't really need to explicitly compile the whole program outside of when you want to run it.

[pjmlp]

Which on any kind of graphical application is all the time.

[Nullabillity]

Because that IDE is compiling the code behind the scenes... (Usually somewhere on a spectrum between literally just using the real compiler, or failing spectacularly to match it.)