Function from_mut
const fn from_mut<T>(s: &mut T) -> &mut [T; 1]Converts a mutable reference to T into a mutable reference to an array of length 1 (without copying).
from_mutconst fn from_mut<T>(s: &mut T) -> &mut [T; 1]Converts a mutable reference to T into a mutable reference to an array of length 1 (without copying).