Discussion on: My first impressions of Rust

It comes down to personal preference, but I like the variable shadowing. When working with immutable types and stricter type system you tend to end up with a lot of temporary locals:

let s = String::new(something);
let stripped = a.trim();
let s_cstr = CString::new(stripped);
let bytes = s_cstr.as_bytes_with_nul();

As in this case, you can often try to do more on one line, etc. But it’s handy to avoid creating a block expression.

Another thing I like about Rust is how it moves by default. This is similar to move semantics in c++11.