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How to read several Json arrays from input and convert them to Java array or List

I'm receiving an input of one or more Json arrays like [{"operation":"buy", "unit-cost":10.00, "quantity": 10000}, {"operation":"sell", "unit-cost":20.00, "quantity": 5000}] [{"operation":"buy", "unit-cost":20.00, "quantity": 10000}, {"operation":"sell", "unit-cost":10.00, "quantity": 5000}] I tried to read the array using JSON-Java in this way: JSONArray array…

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Model not parsing from json/map in flutter

I have this function to get userData into model: Future<UserModel> getUser() async { final snap = await _fireStore .collection("users") .doc(_firebaseAuth.currentUser?.email ?? _firebaseAuth.currentUser?.phoneNumber) .get(); final data = snap.data(); debugPrint("data: $data"); // this line gives output // debugPrint("data: ${jsonDecode(data.toString())}"); -> this line…

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