I too am a Tidyverse shill. Hadley Wickham truly did an amazing job designing the whole ecosystem and API. I personally haven't encountered another API that has given me the same feeling of mastery and empowerment - just the correct blend of expressiveness, cohesion and ease of use.

Of course this is partly attributed to R's great DSL capabilities and making documentation first class. But I've definitely seen terrible APIs in R too.

Wonder if anyone else has had a similar experience with another ecosystem? (Regarding API design)