1、String扩展函数 toInt()、toDouble()

lib/common/extension.dart

@@ -46,6 +46,28 @@ extension StringExt on String? {
   bool isNullOrEmpty() {
     return this == null || this!.isEmpty;
   }
+
+  int toInt() {
+    if (isNullOrEmpty()) {
+      return 0;
+    }
+    try {
+      return int.parse(this!);
+    } catch (e) {
+      return 0;
+    }
+  }
+
+  double toDouble() {
+    if (isNullOrEmpty()) {
+      return 0.0;
+    }
+    try {
+      return double.parse(this!);
+    } catch (e) {
+      return 0.0;
+    }
+  }
 }
 
 extension DoubleExt on num? {