fn exists<Q, R>(k1: &Q, k2: &R) -> bool
	where
		Self::Key1: Borrow<Q>,
		Self::Key2: Borrow<R>,
		Q: Codec,
		R: Codec
	{
		unhashed::exists(&Self::full_key(k1, k2)[..])
	}
/// Returns `true` if value under the specified keys exists.
Returns `true` if value under the specified keys exists.
Returns ` true ` if value under the specified keys exists .
fn exists<Q, R>(k1: &Q, k2: &R) -> bool
	where
		Self::Key1: Borrow<Q>,
		Self::Key2: Borrow<R>,
		Q: Codec,
		R: Codec
	{
		unhashed::exists(&Self::full_key(k1, k2)[..])
	}
fn exists < Q , R > ( k1 : & Q , k2 : & R ) -> bool where Self :: Key1 : Borrow < Q > , Self :: Key2 : Borrow < R > , Q : Codec , R : Codec { unhashed :: exists ( & Self :: full_key ( k1 , k2 ) [ .. ] ) }
Returns `true` if value under the specified keys exists.
Returns ` true ` if value under the specified keys exists .
k1
&Q
k2
&R
k1
&Q
k2
&R