What annoys me about borrowing is, that my default mode of operating is to not mutate things if I can avoid it, and I go to some length in avoiding it, but Rust then forces me to copy or clone, to be able to use things, that I won't mutate anyway, after passing them to another procedure. That creates a lot of mental and syntactical overhead. While in an FP language you are passing values and the assumption is already, that you will not mutate things you pass as arguments and as such there is no need to have extra stuff to do, in order to pass things and later still use them.
Basically, I don't need ownership, if I don't mutate things. It would be nice to have ownership as a concept, in case I do decide to mutate things, but it sucks to have to pay attention to it, when I don't mutate and to carry that around all the time in the code.
Basically, I don't need ownership, if I don't mutate things. It would be nice to have ownership as a concept, in case I do decide to mutate things, but it sucks to have to pay attention to it, when I don't mutate and to carry that around all the time in the code.