dart check if string contains code example

Example 1: flutter string contains

var string = 'Dart strings';
string.contains('D');                     // true
//You can use Regex to find patterns inside a string
string.contains(new RegExp(r'[A-Z]'));    // true

Example 2: dart contains method

void main(){
   var x = "This is a string.";
   var y = "a";
   var match = x.contains(y);
 
   print(match);
}