This topic is Rather important to my stress level, my available time for learning, my available time for family….
For example, with Quartz, I must ask around and experiment (millions of times). Slow to build a coherent understanding. Slow ramp-up. (In contrast, with Python I could do that by reading good articles online.) So my productivity lag/gap remains even after a few years.
Other Negative examples – Tibrv, Autosys, Accurev, Less-known boost libraries,..
MSVS? Most of the search results are about c#, so it’s somewhat harder to solve problems.
Eclipse CDT? Most of the search results are about Eclipse java.
Positive examples – vbscript, DOS batch,
Yet, this stressor is mild compared to “performance warnings”.