Declaration and redeclaration

help
1

Hello,
In the following code when a redeclaration happened, then n is a new variable in the memory?

fn main() {
    let mut n = 1;      // Declaration
    print!("{}", n);
    n = 2;
    print!(" {}", n);
    let n = 3.14;        // Redeclaration
    print!(" {}", n);
    }

The old variable is no longer accessible and hasn’t been destroyed?

Thank you.

2

Yes.

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3

The optimizer is capable of figuring out that the variable's storage may be reclaimed sooner. It will never do this in a way that changes the behavior of the program, though.

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4

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