[Model] Add move assignment for DetectionResult (#600)

* add onnx_ort_runtime demo

* rm in requirements

* support batch eval

* fixed MattingResults bug

* move assignment for DetectionResult

fastdeploy/vision/common/result.cc

@@ -80,6 +80,20 @@ DetectionResult::DetectionResult(const DetectionResult& res) {
   }
 }
 
+DetectionResult& DetectionResult::operator=(DetectionResult&& other) {
+  if (&other != this) {
+    boxes = std::move(other.boxes);
+    scores = std::move(other.scores);
+    label_ids = std::move(other.label_ids);
+    contain_masks = std::move(other.contain_masks);
+    if (contain_masks) {
+      masks.clear();
+      masks = std::move(other.masks);
+    }
+  }
+  return *this;
+}
+
 void DetectionResult::Clear() {
   std::vector<std::array<float, 4>>().swap(boxes);
   std::vector<float>().swap(scores);

fastdeploy/vision/common/result.h

@@ -95,6 +95,7 @@ struct FASTDEPLOY_DECL Mask : public BaseResult {
 /*! @brief Detection result structure for all the object detection models and instance segmentation models
  */
 struct FASTDEPLOY_DECL DetectionResult : public BaseResult {
+  DetectionResult() = default;
   /** \brief All the detected object boxes for an input image, the size of `boxes` is the number of detected objects, and the element of `boxes` is a array of 4 float values, means [xmin, ymin, xmax, ymax]
    */
   std::vector<std::array<float, 4>> boxes;
@@ -111,8 +112,10 @@ struct FASTDEPLOY_DECL DetectionResult : public BaseResult {
 
   ResultType type = ResultType::DETECTION;
 
-  DetectionResult() {}
+  /// Copy constructor
   DetectionResult(const DetectionResult& res);
+  /// Move assignment
+  DetectionResult& operator=(DetectionResult&& other);
 
   /// Clear detection result
   void Clear();