DimSlice: impl Default

crates/cross/src/dim/dim_slice.rs

@@ -7,7 +7,7 @@ use crate::vec::Vec3u;
 /// use this to wrap a flat region of memory into something which can be indexed by coordinates in
 /// 3d space.
 #[cfg_attr(feature = "fmt", derive(Debug))]
-#[derive(Clone, PartialEq)]
+#[derive(Clone, Default, PartialEq)]
 pub struct DimSlice<T> {
     dim: Vec3u,
     items: T,

crates/cross/src/dim/offset_dim_slice.rs

@@ -7,7 +7,7 @@ use crate::vec::Vec3u;
 
 
 #[cfg_attr(feature = "fmt", derive(Debug))]
-#[derive(Clone, PartialEq)]
+#[derive(Clone, Default, PartialEq)]
 pub struct OffsetDimSlice<T> {
     offset: Vec3u,
     inner: DimSlice<T>,