alt Hacker News> What I want is a dispassionate discussion of how different language features impact code quality
This can be difficult because code quality, productivity, safety are hard to objectively define and measure, so we always fall back to differences in interpretation and experience.
I would be interested in serious attempts to argue for this, even if they can't reasonably be backed up by data.
For example, I think there's a pretty strong argument that immutability makes it easier to write multithreaded code (perhaps at some performance cost), because it entirely prevents common types of bugs.
Similarly there's a good argument that making methods open to extension (like Kotlin or Julia) makes it easier for an ecosystem to adopt unified APIs without explicit coordination.
There's obviously a very strong argument that Garbage Collection prevents a lot of memory safety bugs, at costs to interoperability and performance.