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

You can do the following :

var mapper = { 
              '01' : 'USD',
               '17' : 'GBP'     } 

for(var val in mapper.keys){

  switch(mapper[val]){

        case 'USD' : {
                             print('key for ${mapper[val]} is : ' '${val}');  
            }

          break;

        case 'GBP' : {
                             print('key for ${mapper[val]} is : ' '${val}');   
               } 

        }
          }