> "% of developers who are developing with the language or technology and have expressed interest in continuing to develop with it" This is the metric for most

> "% of developers who are developing with the language or technology and have expressed interest in continuing to develop with it" This is the metric for most loved language. So if 15 developers responded that they use rust, and all 15 have interest in continuing with it, then its score is 100%. This is not such a great metric of rust's success IMO. you can't try to push a well designed systems language into applications space and expect it to win everywhere. The actual problem is, there is no mature language with sufficient compile time guarantees for applications space. Go which is somehow treated as rust's competitor, is nowhere near that in terms of expressiveness or compile time checking. You would actually want generics, nullable types, exceptions, and streams in an applications language.