Dart Type Test Operators

Type Test Operators in Dart

These operators are used to check the types of expressions at runtime. Dart is a typed language, and we often want to assert that a value is of a correct type or change the type of a value to a related type.

Consider the following table that contains the list of all the type test operators in Dart :

Program

Consider the following code in Dart that explains the type test operators in Dart,

void main( )
{
 String a = ' JavaTpoint ' ;


  // is type operator
  var b = a is String ;
  print( ' Is JavaTpoint a string ? ' ) ;
  print( b ) ;
  
  // is! type operator
  var c = a is! String ;
  print( ' Is JavaTpoint not a string ? ' ) ;
  print( c ) ;
}

Output

 Is JavaTpoint a string ? 
 True


 Is JavaTpoint not a string ? 
 False