In Ruby you tend to use :symbol for small immutable strings
<< is inplace append operator for strings/arrays, while + is used to make copy. So += will make new string & rebind variable
<< is inplace append operator for strings/arrays, while + is used to make copy. So += will make new string & rebind variable
Good reminder that anyone can go on the internet, just say stuff, and be wrong.
Most but not all of these were performance related. If it took a few days to run that’s fine. Major versions don’t come out that often.