Nim (1.4 ORC) v.s. Rust in terms of safety?

[snej]

@Araq: That's not the way I'd usually write a Rust `unsafe` block. The block 
does nothing to ensure that the dereferences are safe. If we assume in this 
case the only danger is that the pointers might be nil, then:
    
    
    unsafe {
        if r1 != nil { println!("r1 is: {}", *r1); }
        if r2 != nil { println!("r2 is: {}", *r2); }
    }
    
    
    Run

(or maybe it would return an error ... the point is that the `unsafe` block 
delimits code that is actually safe.)