> What does this indexing buy you time wise later?
For simple projects in Python or JS, nothing. For complex projects in most languages, quite a bit. For anything running in the JVM, a whole lot. That's why I pay for my IntelliJ license every year.
The question here is if it's quicker to open a project and be immediately productive in Doom Emacs, and it is, very much so. This is in contrast with Spacemacs, which I used for a couple of years but had to run Emacs as a daemon to make the startup fast.
If I want to go even faster I'll use Vim, but that's mostly out of habit and proficiency.
> And what about starting it with an already indexed project?
Maybe I'm missing something, but it re-starts indexing every time I open the IDE or the project or when switching branches. Is there any other way?
And what about starting it with an already indexed project?