According to Ericsson, violin performance is relatively "objective": most professionals agree on what's bad and what's good, even in a blind test environment. It's the opposite of what general people believe: that music comes down to "individual's taste". It might be true for pop, but not for classical violinists.

I really don't believe coding works like that. If it does, there won't be so many "consider harmful..." memes. You can delibrately practice leetcode, but I doubt if you can delibrately practice coding in the general sense.