Comment by merksoftworks

I think the borrow checker doesn't get enough credit for supporting one of rusts other biggest selling points - it's ecosystem. In C and C++ libraries often go through pains to pass as little allocated memory over the API barrier as possible, communicating about lifetime constraints and ownership is flimsy and frequently causes crashes. In Rust if a function returns Vec<Foo> then every Foo is valid until dropped, and if it's not someone did something unsafe.