pub trait Len {
fn len(&self) -> usize;
#[inline(always)]
fn is_empty(&self) -> bool {
self.len() == 0
}
}
impl Len for [u8] {
#[inline(always)]
fn len(&self) -> usize {
<[u8]>::len(self)
}
}
impl<T: Len + ?Sized> Len for &T {
#[inline(always)]
fn len(&self) -> usize {
(**self).len()
}
}
impl<T: Len + ?Sized> Len for &mut T {
#[inline(always)]
fn len(&self) -> usize {
(**self).len()
}
}