fix: transpose bug fixed

Author: n4ze3m

CHANGELOG.md

@@ -2,7 +2,9 @@
 
 - reverse / flip the matrix method added
 - `comparseobject` deprecated in favor of `compare`
-- `concatenate`, `diagonal`, `reshape`, `transpose` and `flatten` are vectorized now
+- `concatenate`, `diagonal`, `reshape`, `transpose` and `flatten` are vectorized
+  now
+- `transpose` bug fixed `"'double' is not a subtype of type 'int'"`
 
 ## 1.0.3
 

lib/src/matrix2d.dart

@@ -79,21 +79,16 @@ class Matrix2d {
   ///// [[1,1],[2,2]]
   ///```
   List transpose(List list) {
-    final _shapeCheck = _checkArray(list);
-    final shape = this.shape(list);
-    if (!_shapeCheck) throw new Exception('Uneven array dimension');
-    var temp =
-        List.filled(shape[1], 0).map((e) => List.filled(shape[0], 0)).toList();
-    for (var i = 0; i < list.length; i++) {
-      if (list[i] is List) {
-        for (var j = 0; j < list[i].length; j++) {
-          temp[j][i] = list[i][j];
-        }
-      } else {
-        temp[0][i] = list[i];
+    if (!_checkArray(list)) throw new Exception('Uneven array dimension');
+    var result = [];
+    for (var i = 0; i < list[0].length; i++) {
+      var temp = [];
+      for (var j = 0; j < list.length; j++) {
+        temp.add(list[j][i]);
       }
+      result.add(temp);
     }
-    return temp;
+    return result;
   }
 
   /// Function is used when we want to compute the addition of two array.

test/util/matrix2d_test.dart

@@ -14,14 +14,65 @@ void main() {
     expect(m2d.flatten(array), [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 5, 7, 8, 9, 10]);
   });
 
-  test('test transpose', () {
-    expect(m2d.transpose(array), [
-      [1, 6, 5],
-      [2, 7, 7],
-      [3, 8, 8],
-      [4, 9, 9],
-      [5, 10, 10]
-    ]);
+  test('test transpose with double', () {
+    expect(
+        m2d.transpose([
+          [1.0, 2.0],
+          [1.0, 2.0]
+        ]),
+        [
+          [1.0, 1.0],
+          [2.0, 2.0]
+        ]);
+  });
+
+  test('test transpose with int', () {
+    expect(
+        m2d.transpose([
+          [1, 2],
+          [1, 2]
+        ]),
+        [
+          [1, 1],
+          [2, 2]
+        ]);
+  });
+
+  test('test transpose with string', () {
+    expect(
+        m2d.transpose([
+          ['1', '2'],
+          ['1', '2']
+        ]),
+        [
+          ['1', '1'],
+          ['2', '2']
+        ]);
+  });
+
+  test('test transpose with bool', () {
+    expect(
+        m2d.transpose([
+          [true, false],
+          [true, false]
+        ]),
+        [
+          [true, true],
+          [false, false]
+        ]);
+  });
+
+  test('test transpose with dynamic', () {
+    expect(
+        m2d.transpose([
+          [1, '2', true],
+          [1, '2', false]
+        ]),
+        [
+          [1, 1],
+          ['2', '2'],
+          [true, false]
+        ]);
   });
 
   test('test reshape', () {