How to default-initialize a struct containing an array in Rust?

Question

What is the recommended way to declare a struct that contains an array, and then create a zero-initialized instance?

Here is the struct:

#[derive(De         


        

Answer 1

If you're sure to initialize every field with zero, this would work:

impl Default for Histogram {
    fn default() -> Histogram {
        unsafe { std::mem::zeroed() }
    }
}