Re: Nice move
There's also the point that a lot of C/C++ memory allocator will these days do a lot of clever things to minimise interaction with the OS, allocating more than necessary and hanging on to freed memory just in case, all in the name of speed.
Rust is in an even better position to do that. Arguably Rust's memory management is even more automatic than the GCs in C# and Java, it doesn't have to scour allocations looking for memory to free