> and passing in an immutable parameter, would introduce copy-on-write semantics. Yes that’s the point the author is making. His scheme incurs strictly less ov

> and passing in an immutable parameter, would introduce copy-on-write semantics. Yes that’s the point the author is making. His scheme incurs strictly less overhead than the scheme currently used. Some people may want to program in a “value oriented” way without pointers at the C level for various reasons but for efficiency reasons they cannot.