Added copy method for Array struct that performs a deep copy

Author: 9prady9

src/array.rs

@@ -57,6 +57,8 @@ extern {
 
     fn af_retain_array(out: MutAfArray, arr: AfArray) -> c_int;
 
+    fn af_copy_array(out: MutAfArray, arr: AfArray) -> c_int;
+
     fn af_release_array(arr: AfArray) -> c_int;
 
     fn af_print_array(arr: AfArray) -> c_int;
@@ -171,6 +173,17 @@ impl Array {
         }
     }
 
+    pub fn copy(&self) -> Result<Array, AfError> {
+        unsafe {
+            let mut temp: i64 = 0;
+            let err_val = af_copy_array(&mut temp as MutAfArray, self.handle as AfArray);
+            match err_val {
+                0 => Ok(Array::from(temp)),
+                _ => Err(AfError::from(err_val)),
+            }
+        }
+    }
+
     is_func!(is_empty, af_is_empty);
     is_func!(is_scalar, af_is_scalar);
     is_func!(is_row, af_is_row);

src/graphics.rs

@@ -40,9 +40,6 @@ mod defines;
 pub use dim4::Dim4;
 mod dim4;
 
-pub use graphics::Window;
-mod graphics;
-
 pub use image::{gaussian_kernel, load_image, save_image};
 pub use image::{resize, transform, rotate, translate, scale, skew};
 pub use image::{dilate, dilate3, erode, erode3, minfilt, maxfilt};