For many years now I have been almost exclusively working with highly concurrent, pre-#projectloom, threadshifting #scala code. It’s been great (especially since we have #zio now), but these projects are pretty inaccessible to JVM debuggers and breakpoints. My debugging tool of choice is dear old #println again. Today working on an old-school (threadblocking) Java codebase. It is so nice to be able to step through a failing unit test execution line by line in the #intellij #debugger.