Switching from hash table to B-tree is another example of something Rust is good at and Go 1.10 wasn't, so I'd call it a fair part of the comparison. That versi

Switching from hash table to B-tree is another example of something Rust is good at and Go 1.10 wasn't, so I'd call it a fair part of the comparison. That version of Go doesn't have generics, so you're stuck with the builtin hash tables, reflection, or code duplication/generation. (Also, I'm reading the post correctly, this switch was included in the first set of graphs that he called "roughly comparable"). I've never seen a "we switched program $X from language $Y to language $Z" post that reproduced exactly the same program, and I don't think it's reasonable to expect that. This one doesn't seem to have done anything crazy like a completely different algorithm, SIMD intrinsics replacing naive code, etc. (The Game's programs actually are that different, so I don't like that study at all.)