rustHow to convert a Rust slice to a byte array?

To convert a Rust slice to a byte array, you can use the as_mut_ptr method. This method returns a raw pointer to the slice's data. The following example code shows how to use as_mut_ptr to convert a slice to a byte array:

let mut slice = [1, 2, 3, 4];
let ptr = slice.as_mut_ptr();
let byte_array = unsafe { std::slice::from_raw_parts(ptr, slice.len()) };

The output of the example code is a byte array containing the same data as the original slice: [1, 2, 3, 4].

Code explanation

1. let mut slice = [1, 2, 3, 4];: This line creates a mutable slice containing the data [1, 2, 3, 4].
2. let ptr = slice.as_mut_ptr();: This line uses the as_mut_ptr method to get a raw pointer to the slice's data.
3. let byte_array = unsafe { std::slice::from_raw_parts(ptr, slice.len()) };: This line uses the from_raw_parts method to create a byte array from the raw pointer and the length of the slice.

Helpful links

• Rust Documentation - Slice
• Rust Documentation - Raw Pointers

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