[tester756]

Run it under debugger and go thru whole codebase a few times and you'll start getting proficient at it

I've recently did it on huge, very very specific codebase and after 2-3 months I understood it (what to add where, not just what's happening where) relatively OK

[eastbound]

With both lambdas and @ComeFrom instructions[1], it’s impossible. I’m impressed that a feat of modern programming (say, started with Java 8) makes the code difficult to understand.

[1] https://en.wikipedia.org/wiki/COMEFROM

[diarrhea]

I have never heard of COMEFROM.

[jarusll]

I love debugging and I would prefer this even if it's slower but there are cases where it's not easy to setup a debugger.