Add missing zero-dimensional type aliases for array borrows.

Author: adamreichold

src/borrow/mod.rs

@@ -167,7 +167,7 @@ use std::fmt;
 use std::ops::Deref;
 
 use ndarray::{
-    ArrayView, ArrayViewMut, Dimension, IntoDimension, Ix1, Ix2, Ix3, Ix4, Ix5, Ix6, IxDyn,
+    ArrayView, ArrayViewMut, Dimension, IntoDimension, Ix0, Ix1, Ix2, Ix3, Ix4, Ix5, Ix6, IxDyn,
 };
 use pyo3::{FromPyObject, PyAny, PyResult};
 
@@ -193,6 +193,9 @@ where
     array: &'py PyArray<T, D>,
 }
 
+/// Read-only borrow of a zero-dimensional array.
+pub type PyReadonlyArray0<'py, T> = PyReadonlyArray<'py, T, Ix0>;
+
 /// Read-only borrow of a one-dimensional array.
 pub type PyReadonlyArray1<'py, T> = PyReadonlyArray<'py, T, Ix1>;
 
@@ -374,6 +377,9 @@ where
     array: &'py PyArray<T, D>,
 }
 
+/// Read-write borrow of a zero-dimensional array.
+pub type PyReadwriteArray0<'py, T> = PyReadwriteArray<'py, T, Ix0>;
+
 /// Read-write borrow of a one-dimensional array.
 pub type PyReadwriteArray1<'py, T> = PyReadwriteArray<'py, T, Ix1>;
 

src/lib.rs

@@ -95,10 +95,10 @@ pub use crate::array::{
     PyArray6, PyArrayDyn,
 };
 pub use crate::borrow::{
-    PyReadonlyArray, PyReadonlyArray1, PyReadonlyArray2, PyReadonlyArray3, PyReadonlyArray4,
-    PyReadonlyArray5, PyReadonlyArray6, PyReadonlyArrayDyn, PyReadwriteArray, PyReadwriteArray1,
-    PyReadwriteArray2, PyReadwriteArray3, PyReadwriteArray4, PyReadwriteArray5, PyReadwriteArray6,
-    PyReadwriteArrayDyn,
+    PyReadonlyArray, PyReadonlyArray0, PyReadonlyArray1, PyReadonlyArray2, PyReadonlyArray3,
+    PyReadonlyArray4, PyReadonlyArray5, PyReadonlyArray6, PyReadonlyArrayDyn, PyReadwriteArray,
+    PyReadwriteArray0, PyReadwriteArray1, PyReadwriteArray2, PyReadwriteArray3, PyReadwriteArray4,
+    PyReadwriteArray5, PyReadwriteArray6, PyReadwriteArrayDyn,
 };
 pub use crate::convert::{IntoPyArray, NpyIndex, ToNpyDims, ToPyArray};
 pub use crate::dtype::{dtype, Complex32, Complex64, Element, PyArrayDescr};