use all

primitives/src/hash.rs

@@ -126,8 +126,7 @@ macro_rules! impl_hash {
 			}
 
 			pub fn is_zero(&self) -> bool {
-				for b in self.0.iter() { if *b != 0 { return false; } }
-				return true;
+				self.0.iter().all(|b| *b == 0)
 			}
 		}
 	}