/// Get the length of constant sized arrays.
////// ```
/// use ergo_lib::ArrLength;
////// type SecretKeyBytes = [u8; 32];
////// assert_eq!(32, SecretKeyBytes::LEN)
/// ```
pubtraitArrLength{/// Length of the array
constLEN:usize;}impl<T, const LENGTH:usize> ArrLength for [T; LENGTH] {constLEN:usize=LENGTH;}