Passing Type/class as argument and accessing static properties, constructors etc

user_11870905 0
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I'm fairly new to dart, so I'm still trying to figure out all of it's nuances. One thing I'm trying to do, just based on circumstances is to pass a class/type as an argument to a function so that I can access some static methods and properties.

Here's an example:

class WithStatic {
  static final test = 'wwww';
}

void main() {
  print(WithStatic.test);
  test(WithStatic);
}


void test(dynamic cls){
  // throws error Class '_Type' has no instance getter 'test'
  print(cls.test);
}
dart generics
1 Answers

This cannot be done in Dart. Static members can only be accessed directly on the actual class, never on a variable. It doesn't matter whether you use a type variable (<T>) or a variable holding a Type object, neither provides access to a static member.

If you need need to provide delayed access to a static member, you need to pass a function

class WithStatic {
  static final test = 'wwww';
}

void main() {
  print(WithStatic.test);
  test(() => WithStatic.test);
}

void test(dynamic testGetter()){
  print(cls.testGetter());
}
user_21566210
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