Here I'll just put the list sorted by importance(for me :) ) :
1-the standard library architecture(to what gems it's seperated, how to find them, etc).
2-the debugger.
3-the profiler.
4-the C-API.
5-hmm maybe some troubleshooting for rubinius-specific problems.
this is a reference to this issue : https://github.com/rubinius/rubinius/issues/3709
Here I'll just put the list sorted by importance(for me :) ) : 1-the standard library architecture(to what gems it's seperated, how to find them, etc).
2-the debugger. 3-the profiler. 4-the C-API. 5-hmm maybe some troubleshooting for rubinius-specific problems.