Converting a slice to an array

Question

I have a slice that I have guaranteed (in runtime) that its length is at least 8. I want to convert that slice to an array because I need to use std.mem.bytesAsValue() in order to create an f64 from raw bytes (for context, I'm implementing a binary serialization format).

I solved it like this, but I'd like to know if there is a better syntax for achieving the same goal:

    var array: [8]u8 = undefined;
    array[0] = slice[0];
    array[1] = slice[1];
    array[2] = slice[2];
    array[3] = slice[3];
    array[4] = slice[4];
    array[5] = slice[5];
    array[6] = slice[6];
    array[7] = slice[7];

Answer 1

you can do this by dereferencing the slice

var array = slice[0..8].*;

or using std.mem.copy

std.mem.copy(u8, &array, slice[0..2]);

while i think you can just need to put slice[0..8] as argument instead creating a variable