Question

How to check if a key exists in a map with Dart

Answer 1

void main() {
    var map = {'dart': 13, 'c': 89, 'c++': 10, 'python': 40, 'java': 50};
    
    var key = 'dart';
 
    if (map.containsKey(key) ) {
        print('yes');
    } else {
        print('no');
    }
}
   

   
   
/*
run:
   
yes
   
*/

 

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