> One mistake, e.g. you step over a function you should have stepped into, and you've got to start over. Not with rr (rr-project.org). With rr you can step rig

> One mistake, e.g. you step over a function you should have stepped into, and you've got to start over. Not with rr (rr-project.org). With rr you can step right back where you were. rr also lets you debug after the fact without interrupting your program, and lets you collect a recording on a cluster machine and then debug the recording elsewhere.