How to get Map keys by values in Dart?

Question

In Dart language how to get MAP keys by values?

I have a Map like;

{
  \"01\": \"USD\",
  \"17\": \"GBP\",
  \"33\": \"EUR\"
}

And I n

Answer 1

If someone still need a solution, I wrote a simple library to deeply (search inside nested maps either) search by value inside Map. Usage is simple, because deepSearchByValue() is an extension method, so all you need to do is to import my library and call the method on your map:

import 'package:deep_collection/deep_collection.dart';


void main() {
  print({
    "01": "USD",
    "17": "GBP",
    "33": "EUR",
  }.deepSearchByValue((value) => value == 'USD'));
}